diff --git a/bff/api/account.go b/bff/api/account.go
index cdb0d03..e9c9480 100644
--- a/bff/api/account.go
+++ b/bff/api/account.go
@@ -63,7 +63,7 @@ func (server *Server) createAccount(ctx *gin.Context) {
 }
 
 type getAccountRequest struct {
-	ID int64 `uri:"id" binding:"required,min=1" json:"id"`
+	ID uint64 `uri:"id" binding:"required,min=1" json:"id"`
 }
 
 func (server *Server) getAccount(ctx *gin.Context) {
@@ -142,8 +142,8 @@ func (server *Server) listAccounts(ctx *gin.Context) {
 }
 
 type updateAccountPrivacyRequest struct {
-	ID              int64 `binding:"required" json:"ID"`
-	PrivacyAccepted *bool `binding:"required" json:"privacy_accepted"`
+	ID              uint64 `binding:"required" json:"ID"`
+	PrivacyAccepted *bool  `binding:"required" json:"privacy_accepted"`
 }
 
 func (server *Server) updateAccountPrivacy(ctx *gin.Context) {
@@ -180,7 +180,7 @@ func (server *Server) updateAccountPrivacy(ctx *gin.Context) {
 }
 
 type updateAccountRequest struct {
-	ID          int64     `binding:"required" json:"ID"`
+	ID          uint64    `binding:"required" json:"ID"`
 	NewPassword string    `json:"new_password"`
 	Firstname   string    `json:"firstname"`
 	Lastname    string    `json:"lastname"`
diff --git a/bff/api/account_test.go b/bff/api/account_test.go
index d6993a0..42cb105 100644
--- a/bff/api/account_test.go
+++ b/bff/api/account_test.go
@@ -188,7 +188,7 @@ func TestGetAccountAPI(t *testing.T) {
 
 	testCases := []struct {
 		name          string
-		accountID     int64
+		accountID     uint64
 		setupAuth     func(t *testing.T, request *http.Request, tokenMaker token.Maker)
 		buildStubs    func(store *mockdb.MockStore)
 		checkResponse func(t *testing.T, recorder *httptest.ResponseRecorder)
diff --git a/bff/db/mock/store.go b/bff/db/mock/store.go
index a5c15ce..7bd70f9 100644
--- a/bff/db/mock/store.go
+++ b/bff/db/mock/store.go
@@ -249,7 +249,7 @@ func (mr *MockStoreMockRecorder) CreateSession(arg0, arg1 any) *gomock.Call {
 }
 
 // DeleteAccount mocks base method.
-func (m *MockStore) DeleteAccount(arg0 context.Context, arg1 int64) error {
+func (m *MockStore) DeleteAccount(arg0 context.Context, arg1 uint64) error {
 	m.ctrl.T.Helper()
 	ret := m.ctrl.Call(m, "DeleteAccount", arg0, arg1)
 	ret0, _ := ret[0].(error)
@@ -263,7 +263,7 @@ func (mr *MockStoreMockRecorder) DeleteAccount(arg0, arg1 any) *gomock.Call {
 }
 
 // DeleteDocument mocks base method.
-func (m *MockStore) DeleteDocument(arg0 context.Context, arg1 int64) error {
+func (m *MockStore) DeleteDocument(arg0 context.Context, arg1 uint64) error {
 	m.ctrl.T.Helper()
 	ret := m.ctrl.Call(m, "DeleteDocument", arg0, arg1)
 	ret0, _ := ret[0].(error)
@@ -277,7 +277,7 @@ func (mr *MockStoreMockRecorder) DeleteDocument(arg0, arg1 any) *gomock.Call {
 }
 
 // DeleteMail mocks base method.
-func (m *MockStore) DeleteMail(arg0 context.Context, arg1 int64) error {
+func (m *MockStore) DeleteMail(arg0 context.Context, arg1 uint64) error {
 	m.ctrl.T.Helper()
 	ret := m.ctrl.Call(m, "DeleteMail", arg0, arg1)
 	ret0, _ := ret[0].(error)
@@ -291,7 +291,7 @@ func (mr *MockStoreMockRecorder) DeleteMail(arg0, arg1 any) *gomock.Call {
 }
 
 // DeletePayment mocks base method.
-func (m *MockStore) DeletePayment(arg0 context.Context, arg1 int64) error {
+func (m *MockStore) DeletePayment(arg0 context.Context, arg1 uint64) error {
 	m.ctrl.T.Helper()
 	ret := m.ctrl.Call(m, "DeletePayment", arg0, arg1)
 	ret0, _ := ret[0].(error)
@@ -305,7 +305,7 @@ func (mr *MockStoreMockRecorder) DeletePayment(arg0, arg1 any) *gomock.Call {
 }
 
 // DeletePerson mocks base method.
-func (m *MockStore) DeletePerson(arg0 context.Context, arg1 int64) error {
+func (m *MockStore) DeletePerson(arg0 context.Context, arg1 uint64) error {
 	m.ctrl.T.Helper()
 	ret := m.ctrl.Call(m, "DeletePerson", arg0, arg1)
 	ret0, _ := ret[0].(error)
@@ -319,7 +319,7 @@ func (mr *MockStoreMockRecorder) DeletePerson(arg0, arg1 any) *gomock.Call {
 }
 
 // DeletePersonTx mocks base method.
-func (m *MockStore) DeletePersonTx(arg0 context.Context, arg1 int64) error {
+func (m *MockStore) DeletePersonTx(arg0 context.Context, arg1 uint64) error {
 	m.ctrl.T.Helper()
 	ret := m.ctrl.Call(m, "DeletePersonTx", arg0, arg1)
 	ret0, _ := ret[0].(error)
@@ -333,7 +333,7 @@ func (mr *MockStoreMockRecorder) DeletePersonTx(arg0, arg1 any) *gomock.Call {
 }
 
 // DeleteProvider mocks base method.
-func (m *MockStore) DeleteProvider(arg0 context.Context, arg1 int64) error {
+func (m *MockStore) DeleteProvider(arg0 context.Context, arg1 uint64) error {
 	m.ctrl.T.Helper()
 	ret := m.ctrl.Call(m, "DeleteProvider", arg0, arg1)
 	ret0, _ := ret[0].(error)
@@ -347,7 +347,7 @@ func (mr *MockStoreMockRecorder) DeleteProvider(arg0, arg1 any) *gomock.Call {
 }
 
 // DeleteReturn mocks base method.
-func (m *MockStore) DeleteReturn(arg0 context.Context, arg1 int64) error {
+func (m *MockStore) DeleteReturn(arg0 context.Context, arg1 uint64) error {
 	m.ctrl.T.Helper()
 	ret := m.ctrl.Call(m, "DeleteReturn", arg0, arg1)
 	ret0, _ := ret[0].(error)
@@ -361,7 +361,7 @@ func (mr *MockStoreMockRecorder) DeleteReturn(arg0, arg1 any) *gomock.Call {
 }
 
 // DeleteReturnsLog mocks base method.
-func (m *MockStore) DeleteReturnsLog(arg0 context.Context, arg1 int64) error {
+func (m *MockStore) DeleteReturnsLog(arg0 context.Context, arg1 uint64) error {
 	m.ctrl.T.Helper()
 	ret := m.ctrl.Call(m, "DeleteReturnsLog", arg0, arg1)
 	ret0, _ := ret[0].(error)
@@ -375,7 +375,7 @@ func (mr *MockStoreMockRecorder) DeleteReturnsLog(arg0, arg1 any) *gomock.Call {
 }
 
 // GetAccount mocks base method.
-func (m *MockStore) GetAccount(arg0 context.Context, arg1 int64) (db.Account, error) {
+func (m *MockStore) GetAccount(arg0 context.Context, arg1 uint64) (db.Account, error) {
 	m.ctrl.T.Helper()
 	ret := m.ctrl.Call(m, "GetAccount", arg0, arg1)
 	ret0, _ := ret[0].(db.Account)
@@ -405,7 +405,7 @@ func (mr *MockStoreMockRecorder) GetAccountByEmail(arg0, arg1 any) *gomock.Call
 }
 
 // GetAccountForUpdate mocks base method.
-func (m *MockStore) GetAccountForUpdate(arg0 context.Context, arg1 int64) (db.Account, error) {
+func (m *MockStore) GetAccountForUpdate(arg0 context.Context, arg1 uint64) (db.Account, error) {
 	m.ctrl.T.Helper()
 	ret := m.ctrl.Call(m, "GetAccountForUpdate", arg0, arg1)
 	ret0, _ := ret[0].(db.Account)
@@ -420,7 +420,7 @@ func (mr *MockStoreMockRecorder) GetAccountForUpdate(arg0, arg1 any) *gomock.Cal
 }
 
 // GetDocument mocks base method.
-func (m *MockStore) GetDocument(arg0 context.Context, arg1 int64) (db.Document, error) {
+func (m *MockStore) GetDocument(arg0 context.Context, arg1 uint64) (db.Document, error) {
 	m.ctrl.T.Helper()
 	ret := m.ctrl.Call(m, "GetDocument", arg0, arg1)
 	ret0, _ := ret[0].(db.Document)
@@ -435,7 +435,7 @@ func (mr *MockStoreMockRecorder) GetDocument(arg0, arg1 any) *gomock.Call {
 }
 
 // GetMail mocks base method.
-func (m *MockStore) GetMail(arg0 context.Context, arg1 int64) (db.Mail, error) {
+func (m *MockStore) GetMail(arg0 context.Context, arg1 uint64) (db.Mail, error) {
 	m.ctrl.T.Helper()
 	ret := m.ctrl.Call(m, "GetMail", arg0, arg1)
 	ret0, _ := ret[0].(db.Mail)
@@ -450,7 +450,7 @@ func (mr *MockStoreMockRecorder) GetMail(arg0, arg1 any) *gomock.Call {
 }
 
 // GetPayment mocks base method.
-func (m *MockStore) GetPayment(arg0 context.Context, arg1 int64) (db.Payment, error) {
+func (m *MockStore) GetPayment(arg0 context.Context, arg1 uint64) (db.Payment, error) {
 	m.ctrl.T.Helper()
 	ret := m.ctrl.Call(m, "GetPayment", arg0, arg1)
 	ret0, _ := ret[0].(db.Payment)
@@ -465,7 +465,7 @@ func (mr *MockStoreMockRecorder) GetPayment(arg0, arg1 any) *gomock.Call {
 }
 
 // GetPerson mocks base method.
-func (m *MockStore) GetPerson(arg0 context.Context, arg1 int64) (db.Person, error) {
+func (m *MockStore) GetPerson(arg0 context.Context, arg1 uint64) (db.Person, error) {
 	m.ctrl.T.Helper()
 	ret := m.ctrl.Call(m, "GetPerson", arg0, arg1)
 	ret0, _ := ret[0].(db.Person)
@@ -480,7 +480,7 @@ func (mr *MockStoreMockRecorder) GetPerson(arg0, arg1 any) *gomock.Call {
 }
 
 // GetProvider mocks base method.
-func (m *MockStore) GetProvider(arg0 context.Context, arg1 int64) (db.Provider, error) {
+func (m *MockStore) GetProvider(arg0 context.Context, arg1 uint64) (db.Provider, error) {
 	m.ctrl.T.Helper()
 	ret := m.ctrl.Call(m, "GetProvider", arg0, arg1)
 	ret0, _ := ret[0].(db.Provider)
@@ -495,7 +495,7 @@ func (mr *MockStoreMockRecorder) GetProvider(arg0, arg1 any) *gomock.Call {
 }
 
 // GetReturn mocks base method.
-func (m *MockStore) GetReturn(arg0 context.Context, arg1 int64) (db.Return, error) {
+func (m *MockStore) GetReturn(arg0 context.Context, arg1 uint64) (db.Return, error) {
 	m.ctrl.T.Helper()
 	ret := m.ctrl.Call(m, "GetReturn", arg0, arg1)
 	ret0, _ := ret[0].(db.Return)
@@ -525,7 +525,7 @@ func (mr *MockStoreMockRecorder) GetReturns(arg0, arg1 any) *gomock.Call {
 }
 
 // GetReturnsLog mocks base method.
-func (m *MockStore) GetReturnsLog(arg0 context.Context, arg1 int64) (db.ReturnsLog, error) {
+func (m *MockStore) GetReturnsLog(arg0 context.Context, arg1 uint64) (db.ReturnsLog, error) {
 	m.ctrl.T.Helper()
 	ret := m.ctrl.Call(m, "GetReturnsLog", arg0, arg1)
 	ret0, _ := ret[0].(db.ReturnsLog)
diff --git a/bff/db/sqlc/account.sql.go b/bff/db/sqlc/account.sql.go
index 7edfb08..779da37 100644
--- a/bff/db/sqlc/account.sql.go
+++ b/bff/db/sqlc/account.sql.go
@@ -106,7 +106,7 @@ DELETE FROM accounts
 WHERE "id" = $1
 `
 
-func (q *Queries) DeleteAccount(ctx context.Context, id int64) error {
+func (q *Queries) DeleteAccount(ctx context.Context, id uint64) error {
 	_, err := q.db.ExecContext(ctx, deleteAccount, id)
 	return err
 }
@@ -116,7 +116,7 @@ SELECT id, permission_level, passwordhash, firstname, lastname, birthday, privac
 WHERE "id" = $1 LIMIT 1
 `
 
-func (q *Queries) GetAccount(ctx context.Context, id int64) (Account, error) {
+func (q *Queries) GetAccount(ctx context.Context, id uint64) (Account, error) {
 	row := q.db.QueryRowContext(ctx, getAccount, id)
 	var i Account
 	err := row.Scan(
@@ -179,7 +179,7 @@ WHERE "id" = $1 LIMIT 1
 FOR NO KEY UPDATE
 `
 
-func (q *Queries) GetAccountForUpdate(ctx context.Context, id int64) (Account, error) {
+func (q *Queries) GetAccountForUpdate(ctx context.Context, id uint64) (Account, error) {
 	row := q.db.QueryRowContext(ctx, getAccountForUpdate, id)
 	var i Account
 	err := row.Scan(
@@ -279,7 +279,7 @@ RETURNING id, permission_level, passwordhash, firstname, lastname, birthday, pri
 `
 
 type UpdateAccountParams struct {
-	ID           int64          `json:"id"`
+	ID           uint64         `json:"id"`
 	Changer      string         `json:"changer"`
 	Passwordhash sql.NullString `json:"passwordhash"`
 	Firstname    sql.NullString `json:"firstname"`
@@ -347,7 +347,7 @@ type UpdateAccountPrivacyParams struct {
 	PrivacyAccepted     sql.NullBool `json:"privacy_accepted"`
 	PrivacyAcceptedDate sql.NullTime `json:"privacy_accepted_date"`
 	Changer             string       `json:"changer"`
-	ID                  int64        `json:"id"`
+	ID                  uint64       `json:"id"`
 }
 
 func (q *Queries) UpdateAccountPrivacy(ctx context.Context, arg UpdateAccountPrivacyParams) (Account, error) {
diff --git a/bff/db/sqlc/document.sql.go b/bff/db/sqlc/document.sql.go
index 558347e..e6b2825 100644
--- a/bff/db/sqlc/document.sql.go
+++ b/bff/db/sqlc/document.sql.go
@@ -123,7 +123,7 @@ DELETE FROM documents
 WHERE "id" = $1
 `
 
-func (q *Queries) DeleteDocument(ctx context.Context, id int64) error {
+func (q *Queries) DeleteDocument(ctx context.Context, id uint64) error {
 	_, err := q.db.ExecContext(ctx, deleteDocument, id)
 	return err
 }
@@ -133,7 +133,7 @@ SELECT id, person_id, name, type, path, url, valid, valid_date, validated_by, ma
 WHERE "id" = $1 LIMIT 1
 `
 
-func (q *Queries) GetDocument(ctx context.Context, id int64) (Document, error) {
+func (q *Queries) GetDocument(ctx context.Context, id uint64) (Document, error) {
 	row := q.db.QueryRowContext(ctx, getDocument, id)
 	var i Document
 	err := row.Scan(
@@ -168,7 +168,7 @@ RETURNING id, person_id, name, type, path, url, valid, valid_date, validated_by,
 `
 
 type InvalidateDocumentParams struct {
-	ID      int64  `json:"id"`
+	ID      uint64 `json:"id"`
 	Changer string `json:"changer"`
 }
 
@@ -259,7 +259,7 @@ RETURNING id, person_id, name, type, path, url, valid, valid_date, validated_by,
 `
 
 type UpdateDocumentParams struct {
-	ID       int64          `json:"id"`
+	ID       uint64         `json:"id"`
 	Changer  string         `json:"changer"`
 	PersonID sql.NullInt64  `json:"person_id"`
 	Name     sql.NullString `json:"name"`
@@ -311,7 +311,7 @@ RETURNING id, person_id, name, type, path, url, valid, valid_date, validated_by,
 `
 
 type ValidateDocumentParams struct {
-	ID          int64          `json:"id"`
+	ID          uint64         `json:"id"`
 	ValidatedBy sql.NullString `json:"validated_by"`
 }
 
diff --git a/bff/db/sqlc/document_test.go b/bff/db/sqlc/document_test.go
index 45f7a22..95e05cf 100644
--- a/bff/db/sqlc/document_test.go
+++ b/bff/db/sqlc/document_test.go
@@ -19,7 +19,7 @@ func createRandomDocumentUpload(t *testing.T) Document {
 	arg := CreateDocumentUploadParams{
 		PersonID: sql.NullInt64{
 			Valid: true,
-			Int64: person.ID,
+			Int64: int64(person.ID),
 		},
 		Name:    util.RandomString(20),
 		Type:    util.RandomString(5),
@@ -57,7 +57,7 @@ func TestCreateDocumentMail(t *testing.T) {
 	arg := CreateDocumentMailParams{
 		MailID: sql.NullInt64{
 			Valid: true,
-			Int64: mail.ID,
+			Int64: int64(mail.ID),
 		},
 		Name:    util.RandomString(20),
 		Type:    util.RandomString(5),
diff --git a/bff/db/sqlc/mail.sql.go b/bff/db/sqlc/mail.sql.go
index 1375ccf..b770e48 100644
--- a/bff/db/sqlc/mail.sql.go
+++ b/bff/db/sqlc/mail.sql.go
@@ -89,7 +89,7 @@ WHERE "id" = $1
 //
 // WHERE "id" = $1
 // RETURNING *;
-func (q *Queries) DeleteMail(ctx context.Context, id int64) error {
+func (q *Queries) DeleteMail(ctx context.Context, id uint64) error {
 	_, err := q.db.ExecContext(ctx, deleteMail, id)
 	return err
 }
@@ -99,7 +99,7 @@ SELECT id, "from", "to", cc, timestamp, subject, body, creator, created, changer
 WHERE "id" = $1 LIMIT 1
 `
 
-func (q *Queries) GetMail(ctx context.Context, id int64) (Mail, error) {
+func (q *Queries) GetMail(ctx context.Context, id uint64) (Mail, error) {
 	row := q.db.QueryRowContext(ctx, getMail, id)
 	var i Mail
 	err := row.Scan(
diff --git a/bff/db/sqlc/models.go b/bff/db/sqlc/models.go
index f93a481..b27c817 100644
--- a/bff/db/sqlc/models.go
+++ b/bff/db/sqlc/models.go
@@ -12,7 +12,7 @@ import (
 )
 
 type Account struct {
-	ID                  int64          `json:"id"`
+	ID                  uint64         `json:"id"`
 	PermissionLevel     int32          `json:"permission_level"`
 	Passwordhash        string         `json:"passwordhash"`
 	Firstname           string         `json:"firstname"`
@@ -33,7 +33,7 @@ type Account struct {
 }
 
 type Document struct {
-	ID          int64          `json:"id"`
+	ID          uint64         `json:"id"`
 	PersonID    sql.NullInt64  `json:"person_id"`
 	Name        string         `json:"name"`
 	Type        string         `json:"type"`
@@ -50,7 +50,7 @@ type Document struct {
 }
 
 type Mail struct {
-	ID        int64     `json:"id"`
+	ID        uint64    `json:"id"`
 	From      string    `json:"from"`
 	To        []string  `json:"to"`
 	Cc        []string  `json:"cc"`
@@ -64,7 +64,7 @@ type Mail struct {
 }
 
 type Payment struct {
-	ID              int64          `json:"id"`
+	ID              uint64         `json:"id"`
 	AccountID       int64          `json:"account_id"`
 	PaymentCategory string         `json:"payment_category"`
 	Bankname        sql.NullString `json:"bankname"`
@@ -81,7 +81,7 @@ type Payment struct {
 }
 
 type Person struct {
-	ID        int64     `json:"id"`
+	ID        uint64    `json:"id"`
 	AccountID int64     `json:"account_id"`
 	Firstname string    `json:"firstname"`
 	Lastname  string    `json:"lastname"`
@@ -97,7 +97,7 @@ type Person struct {
 }
 
 type Provider struct {
-	ID          int64     `json:"id"`
+	ID          uint64    `json:"id"`
 	Name        string    `json:"name"`
 	Description string    `json:"description"`
 	Category    string    `json:"category"`
@@ -109,7 +109,7 @@ type Provider struct {
 }
 
 type Return struct {
-	ID          int64     `json:"id"`
+	ID          uint64    `json:"id"`
 	PersonID    int64     `json:"person_id"`
 	ProviderID  int64     `json:"provider_id"`
 	Name        string    `json:"name"`
@@ -124,7 +124,7 @@ type Return struct {
 }
 
 type ReturnsLog struct {
-	ID       int64          `json:"id"`
+	ID       uint64         `json:"id"`
 	ReturnID int64          `json:"return_id"`
 	MailID   int64          `json:"mail_id"`
 	Status   sql.NullString `json:"status"`
diff --git a/bff/db/sqlc/payment.sql.go b/bff/db/sqlc/payment.sql.go
index 63b9ddc..c1eb584 100644
--- a/bff/db/sqlc/payment.sql.go
+++ b/bff/db/sqlc/payment.sql.go
@@ -81,7 +81,7 @@ DELETE FROM payments
 WHERE "id" = $1
 `
 
-func (q *Queries) DeletePayment(ctx context.Context, id int64) error {
+func (q *Queries) DeletePayment(ctx context.Context, id uint64) error {
 	_, err := q.db.ExecContext(ctx, deletePayment, id)
 	return err
 }
@@ -91,7 +91,7 @@ SELECT id, account_id, payment_category, bankname, "IBAN", "BIC", paypal_account
 WHERE "id" = $1 LIMIT 1
 `
 
-func (q *Queries) GetPayment(ctx context.Context, id int64) (Payment, error) {
+func (q *Queries) GetPayment(ctx context.Context, id uint64) (Payment, error) {
 	row := q.db.QueryRowContext(ctx, getPayment, id)
 	var i Payment
 	err := row.Scan(
@@ -176,7 +176,7 @@ RETURNING id, account_id, payment_category, bankname, "IBAN", "BIC", paypal_acco
 `
 
 type UpdatePaymentParams struct {
-	ID              int64          `json:"id"`
+	ID              uint64         `json:"id"`
 	Changer         string         `json:"changer"`
 	AccountID       sql.NullInt64  `json:"account_id"`
 	PaymentCategory sql.NullString `json:"payment_category"`
diff --git a/bff/db/sqlc/payment_test.go b/bff/db/sqlc/payment_test.go
index 3ed7b15..48db528 100644
--- a/bff/db/sqlc/payment_test.go
+++ b/bff/db/sqlc/payment_test.go
@@ -17,7 +17,7 @@ func createRandomPayment(t *testing.T) Payment {
 	creator := util.RandomName()
 
 	arg := CreatePaymentParams{
-		AccountID:       account.ID,
+		AccountID:       int64(account.ID),
 		PaymentCategory: util.RandomName(),
 		Bankname: sql.NullString{
 			Valid:  true,
diff --git a/bff/db/sqlc/person.sql.go b/bff/db/sqlc/person.sql.go
index 0520c8f..ddfd32e 100644
--- a/bff/db/sqlc/person.sql.go
+++ b/bff/db/sqlc/person.sql.go
@@ -78,7 +78,7 @@ DELETE FROM persons
 WHERE "id" = $1
 `
 
-func (q *Queries) DeletePerson(ctx context.Context, id int64) error {
+func (q *Queries) DeletePerson(ctx context.Context, id uint64) error {
 	_, err := q.db.ExecContext(ctx, deletePerson, id)
 	return err
 }
@@ -88,7 +88,7 @@ SELECT id, account_id, firstname, lastname, birthday, city, zip, street, country
 WHERE "id" = $1 LIMIT 1
 `
 
-func (q *Queries) GetPerson(ctx context.Context, id int64) (Person, error) {
+func (q *Queries) GetPerson(ctx context.Context, id uint64) (Person, error) {
 	row := q.db.QueryRowContext(ctx, getPerson, id)
 	var i Person
 	err := row.Scan(
@@ -211,7 +211,7 @@ RETURNING id, account_id, firstname, lastname, birthday, city, zip, street, coun
 `
 
 type UpdatePersonParams struct {
-	ID        int64          `json:"id"`
+	ID        uint64         `json:"id"`
 	Changer   string         `json:"changer"`
 	AccountID sql.NullInt64  `json:"account_id"`
 	Firstname sql.NullString `json:"firstname"`
diff --git a/bff/db/sqlc/person_test.go b/bff/db/sqlc/person_test.go
index 8a1256c..85780e6 100644
--- a/bff/db/sqlc/person_test.go
+++ b/bff/db/sqlc/person_test.go
@@ -17,7 +17,7 @@ func createRandomPerson(t *testing.T) Person {
 	creator := util.RandomName()
 
 	arg := CreatePersonParams{
-		AccountID: account.ID,
+		AccountID: int64(account.ID),
 		Firstname: util.RandomName(),
 		Lastname:  util.RandomName(),
 		Birthday:  time.Date(1990, 1, 1, 0, 0, 0, 0, time.UTC),
diff --git a/bff/db/sqlc/provider.sql.go b/bff/db/sqlc/provider.sql.go
index 43cb630..cbc92a8 100644
--- a/bff/db/sqlc/provider.sql.go
+++ b/bff/db/sqlc/provider.sql.go
@@ -61,7 +61,7 @@ DELETE FROM providers
 WHERE "id" = $1
 `
 
-func (q *Queries) DeleteProvider(ctx context.Context, id int64) error {
+func (q *Queries) DeleteProvider(ctx context.Context, id uint64) error {
 	_, err := q.db.ExecContext(ctx, deleteProvider, id)
 	return err
 }
@@ -71,7 +71,7 @@ SELECT id, name, description, category, email, creator, created, changer, change
 WHERE "id" = $1 LIMIT 1
 `
 
-func (q *Queries) GetProvider(ctx context.Context, id int64) (Provider, error) {
+func (q *Queries) GetProvider(ctx context.Context, id uint64) (Provider, error) {
 	row := q.db.QueryRowContext(ctx, getProvider, id)
 	var i Provider
 	err := row.Scan(
@@ -147,7 +147,7 @@ RETURNING id, name, description, category, email, creator, created, changer, cha
 `
 
 type UpdateProviderParams struct {
-	ID          int64          `json:"id"`
+	ID          uint64         `json:"id"`
 	Changer     string         `json:"changer"`
 	Name        sql.NullString `json:"name"`
 	Description sql.NullString `json:"description"`
diff --git a/bff/db/sqlc/querier.go b/bff/db/sqlc/querier.go
index 0322bae..9f3282d 100644
--- a/bff/db/sqlc/querier.go
+++ b/bff/db/sqlc/querier.go
@@ -23,8 +23,8 @@ type Querier interface {
 	CreateReturn(ctx context.Context, arg CreateReturnParams) (Return, error)
 	CreateReturnsLog(ctx context.Context, arg CreateReturnsLogParams) (ReturnsLog, error)
 	CreateSession(ctx context.Context, arg CreateSessionParams) (Session, error)
-	DeleteAccount(ctx context.Context, id int64) error
-	DeleteDocument(ctx context.Context, id int64) error
+	DeleteAccount(ctx context.Context, id uint64) error
+	DeleteDocument(ctx context.Context, id uint64) error
 	// -- name: UpdateMail :one
 	// UPDATE mails
 	// SET
@@ -38,23 +38,23 @@ type Querier interface {
 	//     changed = now()
 	// WHERE "id" = $1
 	// RETURNING *;
-	DeleteMail(ctx context.Context, id int64) error
-	DeletePayment(ctx context.Context, id int64) error
-	DeletePerson(ctx context.Context, id int64) error
-	DeleteProvider(ctx context.Context, id int64) error
-	DeleteReturn(ctx context.Context, id int64) error
-	DeleteReturnsLog(ctx context.Context, id int64) error
-	GetAccount(ctx context.Context, id int64) (Account, error)
+	DeleteMail(ctx context.Context, id uint64) error
+	DeletePayment(ctx context.Context, id uint64) error
+	DeletePerson(ctx context.Context, id uint64) error
+	DeleteProvider(ctx context.Context, id uint64) error
+	DeleteReturn(ctx context.Context, id uint64) error
+	DeleteReturnsLog(ctx context.Context, id uint64) error
+	GetAccount(ctx context.Context, id uint64) (Account, error)
 	GetAccountByEmail(ctx context.Context, email string) (Account, error)
-	GetAccountForUpdate(ctx context.Context, id int64) (Account, error)
-	GetDocument(ctx context.Context, id int64) (Document, error)
-	GetMail(ctx context.Context, id int64) (Mail, error)
-	GetPayment(ctx context.Context, id int64) (Payment, error)
-	GetPerson(ctx context.Context, id int64) (Person, error)
-	GetProvider(ctx context.Context, id int64) (Provider, error)
-	GetReturn(ctx context.Context, id int64) (Return, error)
+	GetAccountForUpdate(ctx context.Context, id uint64) (Account, error)
+	GetDocument(ctx context.Context, id uint64) (Document, error)
+	GetMail(ctx context.Context, id uint64) (Mail, error)
+	GetPayment(ctx context.Context, id uint64) (Payment, error)
+	GetPerson(ctx context.Context, id uint64) (Person, error)
+	GetProvider(ctx context.Context, id uint64) (Provider, error)
+	GetReturn(ctx context.Context, id uint64) (Return, error)
 	GetReturns(ctx context.Context, id int64) ([]Return, error)
-	GetReturnsLog(ctx context.Context, id int64) (ReturnsLog, error)
+	GetReturnsLog(ctx context.Context, id uint64) (ReturnsLog, error)
 	GetSession(ctx context.Context, id uuid.UUID) (Session, error)
 	InvalidateDocument(ctx context.Context, arg InvalidateDocumentParams) (Document, error)
 	ListAccounts(ctx context.Context, arg ListAccountsParams) ([]Account, error)
diff --git a/bff/db/sqlc/return.sql.go b/bff/db/sqlc/return.sql.go
index a483e88..915158d 100644
--- a/bff/db/sqlc/return.sql.go
+++ b/bff/db/sqlc/return.sql.go
@@ -116,7 +116,7 @@ DELETE FROM returns
 WHERE "id" = $1
 `
 
-func (q *Queries) DeleteReturn(ctx context.Context, id int64) error {
+func (q *Queries) DeleteReturn(ctx context.Context, id uint64) error {
 	_, err := q.db.ExecContext(ctx, deleteReturn, id)
 	return err
 }
@@ -126,7 +126,7 @@ SELECT id, person_id, provider_id, name, description, category, email, status, c
 WHERE "id" = $1 LIMIT 1
 `
 
-func (q *Queries) GetReturn(ctx context.Context, id int64) (Return, error) {
+func (q *Queries) GetReturn(ctx context.Context, id uint64) (Return, error) {
 	row := q.db.QueryRowContext(ctx, getReturn, id)
 	var i Return
 	err := row.Scan(
@@ -219,7 +219,7 @@ type UpdateReturnParams struct {
 	Email       sql.NullString `json:"email"`
 	Status      sql.NullString `json:"status"`
 	Changer     string         `json:"changer"`
-	ID          int64          `json:"id"`
+	ID          uint64         `json:"id"`
 }
 
 func (q *Queries) UpdateReturn(ctx context.Context, arg UpdateReturnParams) (Return, error) {
diff --git a/bff/db/sqlc/return_test.go b/bff/db/sqlc/return_test.go
index 019caf1..a57bbee 100644
--- a/bff/db/sqlc/return_test.go
+++ b/bff/db/sqlc/return_test.go
@@ -18,8 +18,8 @@ func createRandomReturn(t *testing.T) Return {
 	creator := util.RandomName()
 
 	arg := CreateReturnParams{
-		PersonID:    person.ID,
-		ProviderID:  provider.ID,
+		PersonID:    int64(person.ID),
+		ProviderID:  int64(provider.ID),
 		Status:      util.RandomString(7),
 		Name:        util.RandomName(),
 		Description: util.RandomString(30),
diff --git a/bff/db/sqlc/returnsLog.sql.go b/bff/db/sqlc/returnsLog.sql.go
index 0793788..1fac37e 100644
--- a/bff/db/sqlc/returnsLog.sql.go
+++ b/bff/db/sqlc/returnsLog.sql.go
@@ -59,7 +59,7 @@ DELETE FROM "returnsLog"
 WHERE "id" = $1
 `
 
-func (q *Queries) DeleteReturnsLog(ctx context.Context, id int64) error {
+func (q *Queries) DeleteReturnsLog(ctx context.Context, id uint64) error {
 	_, err := q.db.ExecContext(ctx, deleteReturnsLog, id)
 	return err
 }
@@ -69,7 +69,7 @@ SELECT id, return_id, mail_id, status, creator, created, changer, changed FROM "
 WHERE "id" = $1 LIMIT 1
 `
 
-func (q *Queries) GetReturnsLog(ctx context.Context, id int64) (ReturnsLog, error) {
+func (q *Queries) GetReturnsLog(ctx context.Context, id uint64) (ReturnsLog, error) {
 	row := q.db.QueryRowContext(ctx, getReturnsLog, id)
 	var i ReturnsLog
 	err := row.Scan(
@@ -146,7 +146,7 @@ type UpdateReturnsLogParams struct {
 	ReturnID sql.NullInt64  `json:"return_id"`
 	MailID   sql.NullInt64  `json:"mail_id"`
 	Status   sql.NullString `json:"status"`
-	ID       int64          `json:"id"`
+	ID       uint64         `json:"id"`
 }
 
 func (q *Queries) UpdateReturnsLog(ctx context.Context, arg UpdateReturnsLogParams) (ReturnsLog, error) {
diff --git a/bff/db/sqlc/returnsLog_test.go b/bff/db/sqlc/returnsLog_test.go
index 30beeee..51bb91d 100644
--- a/bff/db/sqlc/returnsLog_test.go
+++ b/bff/db/sqlc/returnsLog_test.go
@@ -18,8 +18,8 @@ func createRandomReturnsLog(t *testing.T) ReturnsLog {
 	creator := util.RandomName()
 
 	arg := CreateReturnsLogParams{
-		ReturnID: ret.ID,
-		MailID:   mail.ID,
+		ReturnID: int64(ret.ID),
+		MailID:   int64(mail.ID),
 		Status: sql.NullString{
 			Valid:  true,
 			String: util.RandomString(7),
diff --git a/bff/db/sqlc/store.go b/bff/db/sqlc/store.go
index fc50379..cf1849a 100644
--- a/bff/db/sqlc/store.go
+++ b/bff/db/sqlc/store.go
@@ -12,7 +12,7 @@ type Store interface {
 	UpdateAccountTx(ctx context.Context, arg UpdateAccountTxParams) (Account, error)
 	UpdateAccountPrivacyTx(ctx context.Context, arg UpdateAccountPrivacyTxParams) (Account, error)
 	CreatePersonTx(ctx context.Context, arg CreatePersonTxParams) (Person, error)
-	DeletePersonTx(ctx context.Context, id int64) error
+	DeletePersonTx(ctx context.Context, id uint64) error
 }
 
 // Store provides all functions to execute db queries and transactions
diff --git a/bff/db/sqlc/tx_create_person.go b/bff/db/sqlc/tx_create_person.go
index 6fabfa5..68ef658 100644
--- a/bff/db/sqlc/tx_create_person.go
+++ b/bff/db/sqlc/tx_create_person.go
@@ -35,7 +35,7 @@ func (store *SQLStore) CreatePersonTx(ctx context.Context, arg CreatePersonTxPar
 
 		err = q.CloneProviders(ctx, CloneProvidersParams{
 			Creator:  arg.Creator,
-			PersonID: result.Person.ID,
+			PersonID: int64(result.Person.ID),
 		})
 		return err
 	})
diff --git a/bff/db/sqlc/tx_delete_person.go b/bff/db/sqlc/tx_delete_person.go
index 1aa2a8e..221e0be 100644
--- a/bff/db/sqlc/tx_delete_person.go
+++ b/bff/db/sqlc/tx_delete_person.go
@@ -4,10 +4,10 @@ import (
 	"context"
 )
 
-func (store *SQLStore) DeletePersonTx(ctx context.Context, id int64) error {
+func (store *SQLStore) DeletePersonTx(ctx context.Context, id uint64) error {
 	err := store.execTx(ctx, func(q *Queries) error {
 
-		// TODO: Add removal of db.returnsLog entries.
+		// TODO: #82 Add removal of db.returnsLog entries.
 
 		err := q.DeletePerson(ctx, id)
 		if err != nil {
diff --git a/bff/db/sqlc/tx_update_account.go b/bff/db/sqlc/tx_update_account.go
index 3132c9d..7feba5f 100644
--- a/bff/db/sqlc/tx_update_account.go
+++ b/bff/db/sqlc/tx_update_account.go
@@ -6,7 +6,7 @@ import (
 )
 
 type UpdateAccountTxParams struct {
-	ID           int64          `json:"ID"`
+	ID           uint64         `json:"ID"`
 	Changer      string         `json:"changer"`
 	Passwordhash sql.NullString `json:"passwordhash"`
 	Firstname    sql.NullString `json:"firstname"`
diff --git a/bff/db/sqlc/tx_update_account_privacy.go b/bff/db/sqlc/tx_update_account_privacy.go
index 64e054a..9eb02aa 100644
--- a/bff/db/sqlc/tx_update_account_privacy.go
+++ b/bff/db/sqlc/tx_update_account_privacy.go
@@ -7,7 +7,7 @@ import (
 )
 
 type UpdateAccountPrivacyTxParams struct {
-	ID              int64  `json:"ID"`
+	ID              uint64 `json:"ID"`
 	Changer         string `json:"changer"`
 	PrivacyAccepted *bool  `json:"privacy_accepted"`
 }
diff --git a/bff/doc/swagger/df.swagger.json b/bff/doc/swagger/df.swagger.json
index 490e23b..2eac134 100644
--- a/bff/doc/swagger/df.swagger.json
+++ b/bff/doc/swagger/df.swagger.json
@@ -82,7 +82,7 @@
             "in": "path",
             "required": true,
             "type": "string",
-            "format": "int64"
+            "format": "uint64"
           }
         ],
         "tags": [
@@ -116,16 +116,16 @@
           {
             "name": "pageId",
             "in": "query",
-            "required": false,
+            "required": true,
             "type": "integer",
-            "format": "int32"
+            "format": "int64"
           },
           {
             "name": "pageSize",
             "in": "query",
-            "required": false,
+            "required": true,
             "type": "integer",
-            "format": "int32"
+            "format": "int64"
           }
         ],
         "tags": [
@@ -308,7 +308,7 @@
             "in": "path",
             "required": true,
             "type": "string",
-            "format": "int64"
+            "format": "uint64"
           }
         ],
         "tags": [
@@ -344,7 +344,7 @@
             "in": "path",
             "required": true,
             "type": "string",
-            "format": "int64"
+            "format": "uint64"
           }
         ],
         "tags": [
@@ -380,7 +380,7 @@
             "in": "path",
             "required": true,
             "type": "string",
-            "format": "int64"
+            "format": "uint64"
           }
         ],
         "tags": [
@@ -492,7 +492,7 @@
             "in": "path",
             "required": true,
             "type": "string",
-            "format": "int64"
+            "format": "uint64"
           }
         ],
         "tags": [
@@ -528,7 +528,7 @@
             "in": "path",
             "required": true,
             "type": "string",
-            "format": "int64"
+            "format": "uint64"
           }
         ],
         "tags": [
@@ -564,7 +564,7 @@
             "in": "path",
             "required": true,
             "type": "string",
-            "format": "int64"
+            "format": "uint64"
           }
         ],
         "tags": [
@@ -638,7 +638,7 @@
             "in": "path",
             "required": true,
             "type": "string",
-            "format": "int64"
+            "format": "uint64"
           }
         ],
         "tags": [
@@ -709,7 +709,7 @@
       "properties": {
         "id": {
           "type": "string",
-          "format": "int64"
+          "format": "uint64"
         },
         "email": {
           "type": "string"
@@ -897,7 +897,7 @@
       "properties": {
         "accountId": {
           "type": "string",
-          "format": "int64"
+          "format": "uint64"
         },
         "paymentCategory": {
           "type": "string"
@@ -929,7 +929,6 @@
       "required": [
         "accountId",
         "paymentCategory",
-        "paymentSystem",
         "type"
       ]
     },
@@ -958,7 +957,7 @@
       "properties": {
         "accountId": {
           "type": "string",
-          "format": "int64"
+          "format": "uint64"
         },
         "firstname": {
           "type": "string"
@@ -987,6 +986,7 @@
       "description": "Create an Person",
       "title": "Create Person",
       "required": [
+        "accountId",
         "firstname",
         "lastname",
         "street",
@@ -1201,11 +1201,11 @@
       "properties": {
         "id": {
           "type": "string",
-          "format": "int64"
+          "format": "uint64"
         },
         "accountId": {
           "type": "string",
-          "format": "int64"
+          "format": "uint64"
         },
         "paymentCategory": {
           "type": "string"
@@ -1273,11 +1273,11 @@
       "properties": {
         "id": {
           "type": "string",
-          "format": "int64"
+          "format": "uint64"
         },
         "accountId": {
           "type": "string",
-          "format": "int64"
+          "format": "uint64"
         },
         "firstname": {
           "type": "string"
@@ -1444,7 +1444,7 @@
       "properties": {
         "id": {
           "type": "string",
-          "format": "int64"
+          "format": "uint64"
         },
         "email": {
           "type": "string"
@@ -1508,7 +1508,7 @@
       "properties": {
         "id": {
           "type": "string",
-          "format": "int64"
+          "format": "uint64"
         },
         "paymentCategory": {
           "type": "string"
diff --git a/bff/gapi/converter.go b/bff/gapi/converter.go
index 4ed5af9..bc2a05e 100644
--- a/bff/gapi/converter.go
+++ b/bff/gapi/converter.go
@@ -31,7 +31,7 @@ func convertAccount(account db.Account) *pb.Account {
 func convertPerson(person db.Person) *pb.Person {
 	return &pb.Person{
 		Id:        person.ID,
-		AccountId: person.AccountID,
+		AccountId: uint64(person.AccountID),
 		Firstname: person.Firstname,
 		Lastname:  person.Lastname,
 		Street:    person.Street,
@@ -62,7 +62,7 @@ func convertSession(session db.Session) *pb.Session {
 func convertPayment(payment db.Payment) *pb.Payment {
 	return &pb.Payment{
 		Id:              payment.ID,
-		AccountId:       payment.AccountID,
+		AccountId:       uint64(payment.AccountID),
 		PaymentCategory: payment.PaymentCategory,
 		Bankname:        &payment.Bankname.String,
 		IBAN:            &payment.IBAN.String,
diff --git a/bff/gapi/rpc_create_payment.go b/bff/gapi/rpc_create_payment.go
index ea36c1f..f1278b0 100644
--- a/bff/gapi/rpc_create_payment.go
+++ b/bff/gapi/rpc_create_payment.go
@@ -38,8 +38,9 @@ func (server *Server) CreatePayment(ctx context.Context, req *pb.CreatePaymentRe
 		}
 	}
 
+	accountID := int64(req.GetAccountId())
 	arg := db.CreatePaymentParams{
-		AccountID:       req.GetAccountId(),
+		AccountID:       accountID,
 		PaymentCategory: req.GetPaymentCategory(),
 		Bankname: sql.NullString{
 			Valid:  req.GetBankname() != "",
diff --git a/bff/gapi/rpc_create_person.go b/bff/gapi/rpc_create_person.go
index ba0fee4..8985917 100644
--- a/bff/gapi/rpc_create_person.go
+++ b/bff/gapi/rpc_create_person.go
@@ -38,8 +38,9 @@ func (server *Server) CreatePerson(ctx context.Context, req *pb.CreatePersonRequ
 		}
 	}
 
+	accountID := int64(req.GetAccountId())
 	arg := db.CreatePersonTxParams{
-		AccountID: req.GetAccountId(),
+		AccountID: accountID,
 		Firstname: req.GetFirstname(),
 		Lastname:  req.GetLastname(),
 		Birthday:  req.GetBirthday().AsTime(),
diff --git a/bff/gapi/rpc_delete_payment.go b/bff/gapi/rpc_delete_payment.go
index 4077a54..f635ea8 100644
--- a/bff/gapi/rpc_delete_payment.go
+++ b/bff/gapi/rpc_delete_payment.go
@@ -44,7 +44,10 @@ func (server *Server) DeletePayment(ctx context.Context, req *pb.DeletePaymentRe
 		return nil, status.Errorf(codes.Internal, "failed to get payment")
 	}
 
-	if payment.AccountID != account.ID {
+	paymentID := int64(req.GetId())
+	accountID := int64(account.ID)
+
+	if payment.AccountID != accountID {
 		if !server.isAdmin(ctx, authPayload) {
 			return nil, status.Error(codes.NotFound, "payment not found")
 		}
@@ -57,7 +60,7 @@ func (server *Server) DeletePayment(ctx context.Context, req *pb.DeletePaymentRe
 	}
 
 	rsp := &pb.DeletePaymentResponse{
-		Id:      req.GetId(),
+		Id:      paymentID,
 		Deleted: true,
 	}
 	return rsp, nil
diff --git a/bff/gapi/rpc_delete_person.go b/bff/gapi/rpc_delete_person.go
index 8f11972..968f62e 100644
--- a/bff/gapi/rpc_delete_person.go
+++ b/bff/gapi/rpc_delete_person.go
@@ -44,7 +44,10 @@ func (server *Server) DeletePerson(ctx context.Context, req *pb.DeletePersonRequ
 		return nil, status.Errorf(codes.Internal, "failed to get person")
 	}
 
-	if person.AccountID != account.ID {
+	personID := int64(person.ID)
+	accountID := int64(account.ID)
+
+	if person.AccountID != accountID {
 		if !server.isAdmin(ctx, authPayload) {
 			return nil, status.Error(codes.NotFound, "person not found")
 		}
@@ -57,7 +60,7 @@ func (server *Server) DeletePerson(ctx context.Context, req *pb.DeletePersonRequ
 	}
 
 	rsp := &pb.DeletePersonResponse{
-		Id:      req.GetId(),
+		Id:      personID,
 		Deleted: true,
 	}
 	return rsp, nil
diff --git a/bff/gapi/rpc_get_payment.go b/bff/gapi/rpc_get_payment.go
index ed72d10..08cf18c 100644
--- a/bff/gapi/rpc_get_payment.go
+++ b/bff/gapi/rpc_get_payment.go
@@ -44,7 +44,9 @@ func (server *Server) GetPayment(ctx context.Context, req *pb.GetPaymentRequest)
 		return nil, status.Error(codes.NotFound, "failed to get payments")
 	}
 
-	if account.ID != payment.AccountID {
+	accountID := int64(account.ID)
+
+	if accountID != payment.AccountID {
 		if !server.isAdmin(ctx, authPayload) {
 			return nil, status.Error(codes.NotFound, "account not found")
 		}
diff --git a/bff/gapi/rpc_get_person.go b/bff/gapi/rpc_get_person.go
index 7687a39..6439a90 100644
--- a/bff/gapi/rpc_get_person.go
+++ b/bff/gapi/rpc_get_person.go
@@ -44,7 +44,9 @@ func (server *Server) GetPerson(ctx context.Context, req *pb.GetPersonRequest) (
 		return nil, status.Error(codes.NotFound, "failed to get persons")
 	}
 
-	if account.ID != person.AccountID {
+	accountID := int64(account.ID)
+
+	if accountID != person.AccountID {
 		if !server.isAdmin(ctx, authPayload) {
 			return nil, status.Error(codes.NotFound, "account not found")
 		}
diff --git a/bff/gapi/rpc_list_accounts.go b/bff/gapi/rpc_list_accounts.go
index b3dc934..bf38c03 100644
--- a/bff/gapi/rpc_list_accounts.go
+++ b/bff/gapi/rpc_list_accounts.go
@@ -24,8 +24,8 @@ func (server *Server) ListAccounts(ctx context.Context, req *pb.ListAccountsRequ
 	}
 
 	arg := db.ListAccountsParams{
-		Limit:  req.GetPageSize(),
-		Offset: (req.GetPageId() - 1) * req.GetPageSize(),
+		Limit:  int32(req.GetPageSize()),
+		Offset: int32((req.GetPageId() - 1) * req.GetPageSize()),
 	}
 
 	dbAccounts, err := server.store.ListAccounts(ctx, arg)
diff --git a/bff/gapi/rpc_list_payments.go b/bff/gapi/rpc_list_payments.go
index 6f2ce92..124987f 100644
--- a/bff/gapi/rpc_list_payments.go
+++ b/bff/gapi/rpc_list_payments.go
@@ -42,7 +42,9 @@ func (server *Server) ListPayments(ctx context.Context, req *pb.ListPaymentsRequ
 		}
 	}
 
-	dbPayments, err := server.store.ListPayments(ctx, req.GetAccountId())
+	accountID := int64(account.ID)
+
+	dbPayments, err := server.store.ListPayments(ctx, accountID)
 	if err != nil {
 		if errors.Is(err, sql.ErrNoRows) {
 			return nil, status.Error(codes.NotFound, "no payments found")
diff --git a/bff/gapi/rpc_list_persons.go b/bff/gapi/rpc_list_persons.go
index ef4ffa4..129fc9b 100644
--- a/bff/gapi/rpc_list_persons.go
+++ b/bff/gapi/rpc_list_persons.go
@@ -42,7 +42,9 @@ func (server *Server) ListPersons(ctx context.Context, req *pb.ListPersonsReques
 		}
 	}
 
-	dbPersons, err := server.store.ListPersons(ctx, req.GetAccountId())
+	accountID := int64(account.ID)
+
+	dbPersons, err := server.store.ListPersons(ctx, accountID)
 	if err != nil {
 		if errors.Is(err, sql.ErrNoRows) {
 			return nil, status.Error(codes.NotFound, "no persons found")
diff --git a/bff/gapi/rpc_update_payment.go b/bff/gapi/rpc_update_payment.go
index 3856389..b892d81 100644
--- a/bff/gapi/rpc_update_payment.go
+++ b/bff/gapi/rpc_update_payment.go
@@ -46,7 +46,9 @@ func (server *Server) UpdatePayment(ctx context.Context, req *pb.UpdatePaymentRe
 		return nil, status.Error(codes.Internal, "failed to get payment")
 	}
 
-	if dbPayment.AccountID != account.ID {
+	accountID := int64(account.ID)
+
+	if dbPayment.AccountID != accountID {
 		if !server.isAdmin(ctx, authPayload) {
 			return nil, status.Error(codes.NotFound, "payment not found")
 		}
diff --git a/bff/pb/account.pb.go b/bff/pb/account.pb.go
index 16cafdb..caca720 100644
--- a/bff/pb/account.pb.go
+++ b/bff/pb/account.pb.go
@@ -27,7 +27,7 @@ type Account struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	Id                  int64                  `protobuf:"varint,1,opt,name=id,proto3" json:"id,omitempty"`
+	Id                  uint64                 `protobuf:"varint,1,opt,name=id,proto3" json:"id,omitempty"`
 	Email               string                 `protobuf:"bytes,2,opt,name=email,proto3" json:"email,omitempty"`
 	Firstname           string                 `protobuf:"bytes,3,opt,name=firstname,proto3" json:"firstname,omitempty"`
 	Lastname            string                 `protobuf:"bytes,4,opt,name=lastname,proto3" json:"lastname,omitempty"`
@@ -78,7 +78,7 @@ func (*Account) Descriptor() ([]byte, []int) {
 	return file_account_proto_rawDescGZIP(), []int{0}
 }
 
-func (x *Account) GetId() int64 {
+func (x *Account) GetId() uint64 {
 	if x != nil {
 		return x.Id
 	}
@@ -207,7 +207,7 @@ var file_account_proto_rawDesc = []byte{
 	0x2d, 0x6f, 0x70, 0x65, 0x6e, 0x61, 0x70, 0x69, 0x76, 0x32, 0x2f, 0x6f, 0x70, 0x74, 0x69, 0x6f,
 	0x6e, 0x73, 0x2f, 0x61, 0x6e, 0x6e, 0x6f, 0x74, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x73, 0x2e, 0x70,
 	0x72, 0x6f, 0x74, 0x6f, 0x22, 0xae, 0x09, 0x0a, 0x07, 0x41, 0x63, 0x63, 0x6f, 0x75, 0x6e, 0x74,
-	0x12, 0x0e, 0x0a, 0x02, 0x69, 0x64, 0x18, 0x01, 0x20, 0x01, 0x28, 0x03, 0x52, 0x02, 0x69, 0x64,
+	0x12, 0x0e, 0x0a, 0x02, 0x69, 0x64, 0x18, 0x01, 0x20, 0x01, 0x28, 0x04, 0x52, 0x02, 0x69, 0x64,
 	0x12, 0x14, 0x0a, 0x05, 0x65, 0x6d, 0x61, 0x69, 0x6c, 0x18, 0x02, 0x20, 0x01, 0x28, 0x09, 0x52,
 	0x05, 0x65, 0x6d, 0x61, 0x69, 0x6c, 0x12, 0x1c, 0x0a, 0x09, 0x66, 0x69, 0x72, 0x73, 0x74, 0x6e,
 	0x61, 0x6d, 0x65, 0x18, 0x03, 0x20, 0x01, 0x28, 0x09, 0x52, 0x09, 0x66, 0x69, 0x72, 0x73, 0x74,
diff --git a/bff/pb/payment.pb.go b/bff/pb/payment.pb.go
index 481beee..b79155c 100644
--- a/bff/pb/payment.pb.go
+++ b/bff/pb/payment.pb.go
@@ -27,8 +27,8 @@ type Payment struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	Id              int64                  `protobuf:"varint,1,opt,name=id,proto3" json:"id,omitempty"`
-	AccountId       int64                  `protobuf:"varint,2,opt,name=account_id,json=accountId,proto3" json:"account_id,omitempty"`
+	Id              uint64                 `protobuf:"varint,1,opt,name=id,proto3" json:"id,omitempty"`
+	AccountId       uint64                 `protobuf:"varint,2,opt,name=account_id,json=accountId,proto3" json:"account_id,omitempty"`
 	PaymentCategory string                 `protobuf:"bytes,3,opt,name=payment_category,json=paymentCategory,proto3" json:"payment_category,omitempty"`
 	Bankname        *string                `protobuf:"bytes,4,opt,name=bankname,proto3,oneof" json:"bankname,omitempty"`
 	IBAN            *string                `protobuf:"bytes,5,opt,name=IBAN,proto3,oneof" json:"IBAN,omitempty"`
@@ -75,14 +75,14 @@ func (*Payment) Descriptor() ([]byte, []int) {
 	return file_payment_proto_rawDescGZIP(), []int{0}
 }
 
-func (x *Payment) GetId() int64 {
+func (x *Payment) GetId() uint64 {
 	if x != nil {
 		return x.Id
 	}
 	return 0
 }
 
-func (x *Payment) GetAccountId() int64 {
+func (x *Payment) GetAccountId() uint64 {
 	if x != nil {
 		return x.AccountId
 	}
@@ -183,9 +183,9 @@ var file_payment_proto_rawDesc = []byte{
 	0x2d, 0x6f, 0x70, 0x65, 0x6e, 0x61, 0x70, 0x69, 0x76, 0x32, 0x2f, 0x6f, 0x70, 0x74, 0x69, 0x6f,
 	0x6e, 0x73, 0x2f, 0x61, 0x6e, 0x6e, 0x6f, 0x74, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x73, 0x2e, 0x70,
 	0x72, 0x6f, 0x74, 0x6f, 0x22, 0xdf, 0x07, 0x0a, 0x07, 0x50, 0x61, 0x79, 0x6d, 0x65, 0x6e, 0x74,
-	0x12, 0x0e, 0x0a, 0x02, 0x69, 0x64, 0x18, 0x01, 0x20, 0x01, 0x28, 0x03, 0x52, 0x02, 0x69, 0x64,
+	0x12, 0x0e, 0x0a, 0x02, 0x69, 0x64, 0x18, 0x01, 0x20, 0x01, 0x28, 0x04, 0x52, 0x02, 0x69, 0x64,
 	0x12, 0x1d, 0x0a, 0x0a, 0x61, 0x63, 0x63, 0x6f, 0x75, 0x6e, 0x74, 0x5f, 0x69, 0x64, 0x18, 0x02,
-	0x20, 0x01, 0x28, 0x03, 0x52, 0x09, 0x61, 0x63, 0x63, 0x6f, 0x75, 0x6e, 0x74, 0x49, 0x64, 0x12,
+	0x20, 0x01, 0x28, 0x04, 0x52, 0x09, 0x61, 0x63, 0x63, 0x6f, 0x75, 0x6e, 0x74, 0x49, 0x64, 0x12,
 	0x29, 0x0a, 0x10, 0x70, 0x61, 0x79, 0x6d, 0x65, 0x6e, 0x74, 0x5f, 0x63, 0x61, 0x74, 0x65, 0x67,
 	0x6f, 0x72, 0x79, 0x18, 0x03, 0x20, 0x01, 0x28, 0x09, 0x52, 0x0f, 0x70, 0x61, 0x79, 0x6d, 0x65,
 	0x6e, 0x74, 0x43, 0x61, 0x74, 0x65, 0x67, 0x6f, 0x72, 0x79, 0x12, 0x1f, 0x0a, 0x08, 0x62, 0x61,
diff --git a/bff/pb/person.pb.go b/bff/pb/person.pb.go
index cc6ca1e..9204ed5 100644
--- a/bff/pb/person.pb.go
+++ b/bff/pb/person.pb.go
@@ -27,8 +27,8 @@ type Person struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	Id        int64                  `protobuf:"varint,1,opt,name=id,proto3" json:"id,omitempty"`
-	AccountId int64                  `protobuf:"varint,2,opt,name=account_id,json=accountId,proto3" json:"account_id,omitempty"`
+	Id        uint64                 `protobuf:"varint,1,opt,name=id,proto3" json:"id,omitempty"`
+	AccountId uint64                 `protobuf:"varint,2,opt,name=account_id,json=accountId,proto3" json:"account_id,omitempty"`
 	Firstname string                 `protobuf:"bytes,3,opt,name=firstname,proto3" json:"firstname,omitempty"`
 	Lastname  string                 `protobuf:"bytes,4,opt,name=lastname,proto3" json:"lastname,omitempty"`
 	Street    string                 `protobuf:"bytes,5,opt,name=street,proto3" json:"street,omitempty"`
@@ -74,14 +74,14 @@ func (*Person) Descriptor() ([]byte, []int) {
 	return file_person_proto_rawDescGZIP(), []int{0}
 }
 
-func (x *Person) GetId() int64 {
+func (x *Person) GetId() uint64 {
 	if x != nil {
 		return x.Id
 	}
 	return 0
 }
 
-func (x *Person) GetAccountId() int64 {
+func (x *Person) GetAccountId() uint64 {
 	if x != nil {
 		return x.AccountId
 	}
@@ -175,9 +175,9 @@ var file_person_proto_rawDesc = []byte{
 	0x6f, 0x70, 0x65, 0x6e, 0x61, 0x70, 0x69, 0x76, 0x32, 0x2f, 0x6f, 0x70, 0x74, 0x69, 0x6f, 0x6e,
 	0x73, 0x2f, 0x61, 0x6e, 0x6e, 0x6f, 0x74, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x73, 0x2e, 0x70, 0x72,
 	0x6f, 0x74, 0x6f, 0x22, 0xb7, 0x07, 0x0a, 0x06, 0x50, 0x65, 0x72, 0x73, 0x6f, 0x6e, 0x12, 0x0e,
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+	0x0a, 0x02, 0x69, 0x64, 0x18, 0x01, 0x20, 0x01, 0x28, 0x04, 0x52, 0x02, 0x69, 0x64, 0x12, 0x1d,
 	0x0a, 0x0a, 0x61, 0x63, 0x63, 0x6f, 0x75, 0x6e, 0x74, 0x5f, 0x69, 0x64, 0x18, 0x02, 0x20, 0x01,
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+	0x28, 0x04, 0x52, 0x09, 0x61, 0x63, 0x63, 0x6f, 0x75, 0x6e, 0x74, 0x49, 0x64, 0x12, 0x1c, 0x0a,
 	0x09, 0x66, 0x69, 0x72, 0x73, 0x74, 0x6e, 0x61, 0x6d, 0x65, 0x18, 0x03, 0x20, 0x01, 0x28, 0x09,
 	0x52, 0x09, 0x66, 0x69, 0x72, 0x73, 0x74, 0x6e, 0x61, 0x6d, 0x65, 0x12, 0x1a, 0x0a, 0x08, 0x6c,
 	0x61, 0x73, 0x74, 0x6e, 0x61, 0x6d, 0x65, 0x18, 0x04, 0x20, 0x01, 0x28, 0x09, 0x52, 0x08, 0x6c,
diff --git a/bff/pb/rpc_create_payment.pb.go b/bff/pb/rpc_create_payment.pb.go
index 7ce5d6f..1828fa6 100644
--- a/bff/pb/rpc_create_payment.pb.go
+++ b/bff/pb/rpc_create_payment.pb.go
@@ -26,7 +26,7 @@ type CreatePaymentRequest struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	AccountId       int64   `protobuf:"varint,1,opt,name=account_id,json=accountId,proto3" json:"account_id,omitempty"`
+	AccountId       uint64  `protobuf:"varint,1,opt,name=account_id,json=accountId,proto3" json:"account_id,omitempty"`
 	PaymentCategory string  `protobuf:"bytes,2,opt,name=payment_category,json=paymentCategory,proto3" json:"payment_category,omitempty"`
 	Bankname        *string `protobuf:"bytes,3,opt,name=bankname,proto3,oneof" json:"bankname,omitempty"`
 	IBAN            *string `protobuf:"bytes,4,opt,name=IBAN,proto3,oneof" json:"IBAN,omitempty"`
@@ -69,7 +69,7 @@ func (*CreatePaymentRequest) Descriptor() ([]byte, []int) {
 	return file_rpc_create_payment_proto_rawDescGZIP(), []int{0}
 }
 
-func (x *CreatePaymentRequest) GetAccountId() int64 {
+func (x *CreatePaymentRequest) GetAccountId() uint64 {
 	if x != nil {
 		return x.AccountId
 	}
@@ -187,10 +187,10 @@ var file_rpc_create_payment_proto_rawDesc = []byte{
 	0x70, 0x72, 0x6f, 0x74, 0x6f, 0x63, 0x2d, 0x67, 0x65, 0x6e, 0x2d, 0x6f, 0x70, 0x65, 0x6e, 0x61,
 	0x70, 0x69, 0x76, 0x32, 0x2f, 0x6f, 0x70, 0x74, 0x69, 0x6f, 0x6e, 0x73, 0x2f, 0x61, 0x6e, 0x6e,
 	0x6f, 0x74, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x73, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x1a, 0x0d,
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 	0x75, 0x6e, 0x74, 0x49, 0x64, 0x12, 0x29, 0x0a, 0x10, 0x70, 0x61, 0x79, 0x6d, 0x65, 0x6e, 0x74,
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@@ -208,40 +208,39 @@ var file_rpc_create_payment_proto_rawDesc = []byte{
 	0x6d, 0x18, 0x08, 0x20, 0x01, 0x28, 0x09, 0x48, 0x05, 0x52, 0x0d, 0x70, 0x61, 0x79, 0x6d, 0x65,
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 }
 
 var (
diff --git a/bff/pb/rpc_create_person.pb.go b/bff/pb/rpc_create_person.pb.go
index 38926f5..793f1c1 100644
--- a/bff/pb/rpc_create_person.pb.go
+++ b/bff/pb/rpc_create_person.pb.go
@@ -27,7 +27,7 @@ type CreatePersonRequest struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	AccountId int64                  `protobuf:"varint,1,opt,name=account_id,json=accountId,proto3" json:"account_id,omitempty"`
+	AccountId uint64                 `protobuf:"varint,1,opt,name=account_id,json=accountId,proto3" json:"account_id,omitempty"`
 	Firstname string                 `protobuf:"bytes,2,opt,name=firstname,proto3" json:"firstname,omitempty"`
 	Lastname  string                 `protobuf:"bytes,3,opt,name=lastname,proto3" json:"lastname,omitempty"`
 	Street    string                 `protobuf:"bytes,4,opt,name=street,proto3" json:"street,omitempty"`
@@ -69,7 +69,7 @@ func (*CreatePersonRequest) Descriptor() ([]byte, []int) {
 	return file_rpc_create_person_proto_rawDescGZIP(), []int{0}
 }
 
-func (x *CreatePersonRequest) GetAccountId() int64 {
+func (x *CreatePersonRequest) GetAccountId() uint64 {
 	if x != nil {
 		return x.AccountId
 	}
@@ -182,10 +182,10 @@ var file_rpc_create_person_proto_rawDesc = []byte{
 	0x70, 0x72, 0x6f, 0x74, 0x6f, 0x63, 0x2d, 0x67, 0x65, 0x6e, 0x2d, 0x6f, 0x70, 0x65, 0x6e, 0x61,
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@@ -200,34 +200,35 @@ var file_rpc_create_person_proto_rawDesc = []byte{
 	0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x62, 0x75, 0x66, 0x2e, 0x54, 0x69, 0x6d, 0x65, 0x73, 0x74,
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 }
 
 var (
diff --git a/bff/pb/rpc_delete_payment.pb.go b/bff/pb/rpc_delete_payment.pb.go
index 7d0d41a..2ca05c5 100644
--- a/bff/pb/rpc_delete_payment.pb.go
+++ b/bff/pb/rpc_delete_payment.pb.go
@@ -26,7 +26,7 @@ type DeletePaymentRequest struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	Id int64 `protobuf:"varint,1,opt,name=id,proto3" json:"id,omitempty"`
+	Id uint64 `protobuf:"varint,1,opt,name=id,proto3" json:"id,omitempty"`
 }
 
 func (x *DeletePaymentRequest) Reset() {
@@ -61,7 +61,7 @@ func (*DeletePaymentRequest) Descriptor() ([]byte, []int) {
 	return file_rpc_delete_payment_proto_rawDescGZIP(), []int{0}
 }
 
-func (x *DeletePaymentRequest) GetId() int64 {
+func (x *DeletePaymentRequest) GetId() uint64 {
 	if x != nil {
 		return x.Id
 	}
@@ -133,7 +133,7 @@ var file_rpc_delete_payment_proto_rawDesc = []byte{
 	0x6f, 0x74, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x73, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x22, 0x61,
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+	0x28, 0x04, 0x52, 0x02, 0x69, 0x64, 0x3a, 0x39, 0x92, 0x41, 0x36, 0x0a, 0x27, 0x2a, 0x0e, 0x44,
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 	0x65, 0x6c, 0x65, 0x74, 0x65, 0x20, 0x61, 0x20, 0x50, 0x61, 0x79, 0x6d, 0x65, 0x6e, 0x74, 0xd2,
 	0x01, 0x02, 0x69, 0x64, 0x32, 0x0b, 0x7b, 0x22, 0x69, 0x64, 0x22, 0x3a, 0x20, 0x22, 0x31, 0x22,
diff --git a/bff/pb/rpc_delete_person.pb.go b/bff/pb/rpc_delete_person.pb.go
index 0fa913c..15abbbd 100644
--- a/bff/pb/rpc_delete_person.pb.go
+++ b/bff/pb/rpc_delete_person.pb.go
@@ -26,7 +26,7 @@ type DeletePersonRequest struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	Id int64 `protobuf:"varint,1,opt,name=id,proto3" json:"id,omitempty"`
+	Id uint64 `protobuf:"varint,1,opt,name=id,proto3" json:"id,omitempty"`
 }
 
 func (x *DeletePersonRequest) Reset() {
@@ -61,7 +61,7 @@ func (*DeletePersonRequest) Descriptor() ([]byte, []int) {
 	return file_rpc_delete_person_proto_rawDescGZIP(), []int{0}
 }
 
-func (x *DeletePersonRequest) GetId() int64 {
+func (x *DeletePersonRequest) GetId() uint64 {
 	if x != nil {
 		return x.Id
 	}
@@ -132,7 +132,7 @@ var file_rpc_delete_person_proto_rawDesc = []byte{
 	0x69, 0x76, 0x32, 0x2f, 0x6f, 0x70, 0x74, 0x69, 0x6f, 0x6e, 0x73, 0x2f, 0x61, 0x6e, 0x6e, 0x6f,
 	0x74, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x73, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x22, 0x5e, 0x0a,
 	0x13, 0x44, 0x65, 0x6c, 0x65, 0x74, 0x65, 0x50, 0x65, 0x72, 0x73, 0x6f, 0x6e, 0x52, 0x65, 0x71,
-	0x75, 0x65, 0x73, 0x74, 0x12, 0x0e, 0x0a, 0x02, 0x69, 0x64, 0x18, 0x01, 0x20, 0x01, 0x28, 0x03,
+	0x75, 0x65, 0x73, 0x74, 0x12, 0x0e, 0x0a, 0x02, 0x69, 0x64, 0x18, 0x01, 0x20, 0x01, 0x28, 0x04,
 	0x52, 0x02, 0x69, 0x64, 0x3a, 0x37, 0x92, 0x41, 0x34, 0x0a, 0x25, 0x2a, 0x0d, 0x44, 0x65, 0x6c,
 	0x65, 0x74, 0x65, 0x20, 0x50, 0x65, 0x72, 0x73, 0x6f, 0x6e, 0x32, 0x0f, 0x44, 0x65, 0x6c, 0x65,
 	0x74, 0x65, 0x20, 0x61, 0x20, 0x50, 0x65, 0x72, 0x73, 0x6f, 0x6e, 0xd2, 0x01, 0x02, 0x69, 0x64,
diff --git a/bff/pb/rpc_get_account.pb.go b/bff/pb/rpc_get_account.pb.go
index 98ff6c2..d1ec158 100644
--- a/bff/pb/rpc_get_account.pb.go
+++ b/bff/pb/rpc_get_account.pb.go
@@ -26,7 +26,7 @@ type GetAccountRequest struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	Id int64 `protobuf:"varint,1,opt,name=id,proto3" json:"id,omitempty"`
+	Id uint64 `protobuf:"varint,1,opt,name=id,proto3" json:"id,omitempty"`
 }
 
 func (x *GetAccountRequest) Reset() {
@@ -61,7 +61,7 @@ func (*GetAccountRequest) Descriptor() ([]byte, []int) {
 	return file_rpc_get_account_proto_rawDescGZIP(), []int{0}
 }
 
-func (x *GetAccountRequest) GetId() int64 {
+func (x *GetAccountRequest) GetId() uint64 {
 	if x != nil {
 		return x.Id
 	}
@@ -125,7 +125,7 @@ var file_rpc_get_account_proto_rawDesc = []byte{
 	0x74, 0x69, 0x6f, 0x6e, 0x73, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x1a, 0x0d, 0x61, 0x63, 0x63,
 	0x6f, 0x75, 0x6e, 0x74, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x22, 0x5f, 0x0a, 0x11, 0x47, 0x65,
 	0x74, 0x41, 0x63, 0x63, 0x6f, 0x75, 0x6e, 0x74, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x12,
-	0x0e, 0x0a, 0x02, 0x69, 0x64, 0x18, 0x01, 0x20, 0x01, 0x28, 0x03, 0x52, 0x02, 0x69, 0x64, 0x3a,
+	0x0e, 0x0a, 0x02, 0x69, 0x64, 0x18, 0x01, 0x20, 0x01, 0x28, 0x04, 0x52, 0x02, 0x69, 0x64, 0x3a,
 	0x3a, 0x92, 0x41, 0x37, 0x0a, 0x27, 0x2a, 0x0a, 0x47, 0x65, 0x74, 0x41, 0x63, 0x63, 0x6f, 0x75,
 	0x6e, 0x74, 0x32, 0x14, 0x47, 0x65, 0x74, 0x20, 0x61, 0x6e, 0x20, 0x41, 0x63, 0x63, 0x6f, 0x75,
 	0x6e, 0x74, 0x20, 0x62, 0x79, 0x20, 0x49, 0x44, 0xd2, 0x01, 0x02, 0x69, 0x64, 0x32, 0x0c, 0x7b,
diff --git a/bff/pb/rpc_get_payment.pb.go b/bff/pb/rpc_get_payment.pb.go
index 81f676f..0588f72 100644
--- a/bff/pb/rpc_get_payment.pb.go
+++ b/bff/pb/rpc_get_payment.pb.go
@@ -26,7 +26,7 @@ type GetPaymentRequest struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	Id int64 `protobuf:"varint,1,opt,name=id,proto3" json:"id,omitempty"`
+	Id uint64 `protobuf:"varint,1,opt,name=id,proto3" json:"id,omitempty"`
 }
 
 func (x *GetPaymentRequest) Reset() {
@@ -61,7 +61,7 @@ func (*GetPaymentRequest) Descriptor() ([]byte, []int) {
 	return file_rpc_get_payment_proto_rawDescGZIP(), []int{0}
 }
 
-func (x *GetPaymentRequest) GetId() int64 {
+func (x *GetPaymentRequest) GetId() uint64 {
 	if x != nil {
 		return x.Id
 	}
@@ -125,7 +125,7 @@ var file_rpc_get_payment_proto_rawDesc = []byte{
 	0x74, 0x69, 0x6f, 0x6e, 0x73, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x1a, 0x0d, 0x70, 0x61, 0x79,
 	0x6d, 0x65, 0x6e, 0x74, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x22, 0x5f, 0x0a, 0x11, 0x47, 0x65,
 	0x74, 0x50, 0x61, 0x79, 0x6d, 0x65, 0x6e, 0x74, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x12,
-	0x0e, 0x0a, 0x02, 0x69, 0x64, 0x18, 0x01, 0x20, 0x01, 0x28, 0x03, 0x52, 0x02, 0x69, 0x64, 0x3a,
+	0x0e, 0x0a, 0x02, 0x69, 0x64, 0x18, 0x01, 0x20, 0x01, 0x28, 0x04, 0x52, 0x02, 0x69, 0x64, 0x3a,
 	0x3a, 0x92, 0x41, 0x37, 0x0a, 0x27, 0x2a, 0x0a, 0x47, 0x65, 0x74, 0x50, 0x61, 0x79, 0x6d, 0x65,
 	0x6e, 0x74, 0x32, 0x14, 0x47, 0x65, 0x74, 0x20, 0x61, 0x6e, 0x20, 0x50, 0x61, 0x79, 0x6d, 0x65,
 	0x6e, 0x74, 0x20, 0x62, 0x79, 0x20, 0x49, 0x44, 0xd2, 0x01, 0x02, 0x69, 0x64, 0x32, 0x0c, 0x7b,
diff --git a/bff/pb/rpc_get_person.pb.go b/bff/pb/rpc_get_person.pb.go
index 80362e3..6757da0 100644
--- a/bff/pb/rpc_get_person.pb.go
+++ b/bff/pb/rpc_get_person.pb.go
@@ -26,7 +26,7 @@ type GetPersonRequest struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	Id int64 `protobuf:"varint,1,opt,name=id,proto3" json:"id,omitempty"`
+	Id uint64 `protobuf:"varint,1,opt,name=id,proto3" json:"id,omitempty"`
 }
 
 func (x *GetPersonRequest) Reset() {
@@ -61,7 +61,7 @@ func (*GetPersonRequest) Descriptor() ([]byte, []int) {
 	return file_rpc_get_person_proto_rawDescGZIP(), []int{0}
 }
 
-func (x *GetPersonRequest) GetId() int64 {
+func (x *GetPersonRequest) GetId() uint64 {
 	if x != nil {
 		return x.Id
 	}
@@ -125,7 +125,7 @@ var file_rpc_get_person_proto_rawDesc = []byte{
 	0x69, 0x6f, 0x6e, 0x73, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x1a, 0x0c, 0x70, 0x65, 0x72, 0x73,
 	0x6f, 0x6e, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x22, 0x5c, 0x0a, 0x10, 0x47, 0x65, 0x74, 0x50,
 	0x65, 0x72, 0x73, 0x6f, 0x6e, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x12, 0x0e, 0x0a, 0x02,
-	0x69, 0x64, 0x18, 0x01, 0x20, 0x01, 0x28, 0x03, 0x52, 0x02, 0x69, 0x64, 0x3a, 0x38, 0x92, 0x41,
+	0x69, 0x64, 0x18, 0x01, 0x20, 0x01, 0x28, 0x04, 0x52, 0x02, 0x69, 0x64, 0x3a, 0x38, 0x92, 0x41,
 	0x35, 0x0a, 0x25, 0x2a, 0x09, 0x47, 0x65, 0x74, 0x50, 0x65, 0x72, 0x73, 0x6f, 0x6e, 0x32, 0x13,
 	0x47, 0x65, 0x74, 0x20, 0x61, 0x6e, 0x20, 0x50, 0x65, 0x72, 0x73, 0x6f, 0x6e, 0x20, 0x62, 0x79,
 	0x20, 0x49, 0x44, 0xd2, 0x01, 0x02, 0x69, 0x64, 0x32, 0x0c, 0x7b, 0x22, 0x69, 0x64, 0x22, 0x3a,
diff --git a/bff/pb/rpc_list_accounts.pb.go b/bff/pb/rpc_list_accounts.pb.go
index 39982d7..f75815b 100644
--- a/bff/pb/rpc_list_accounts.pb.go
+++ b/bff/pb/rpc_list_accounts.pb.go
@@ -26,8 +26,8 @@ type ListAccountsRequest struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	PageId   int32 `protobuf:"varint,1,opt,name=page_id,json=pageId,proto3" json:"page_id,omitempty"`
-	PageSize int32 `protobuf:"varint,2,opt,name=page_size,json=pageSize,proto3" json:"page_size,omitempty"`
+	PageId   uint32 `protobuf:"varint,1,opt,name=page_id,json=pageId,proto3" json:"page_id,omitempty"`
+	PageSize uint32 `protobuf:"varint,2,opt,name=page_size,json=pageSize,proto3" json:"page_size,omitempty"`
 }
 
 func (x *ListAccountsRequest) Reset() {
@@ -62,14 +62,14 @@ func (*ListAccountsRequest) Descriptor() ([]byte, []int) {
 	return file_rpc_list_accounts_proto_rawDescGZIP(), []int{0}
 }
 
-func (x *ListAccountsRequest) GetPageId() int32 {
+func (x *ListAccountsRequest) GetPageId() uint32 {
 	if x != nil {
 		return x.PageId
 	}
 	return 0
 }
 
-func (x *ListAccountsRequest) GetPageSize() int32 {
+func (x *ListAccountsRequest) GetPageSize() uint32 {
 	if x != nil {
 		return x.PageSize
 	}
@@ -131,27 +131,28 @@ var file_rpc_list_accounts_proto_rawDesc = []byte{
 	0x72, 0x6f, 0x74, 0x6f, 0x63, 0x2d, 0x67, 0x65, 0x6e, 0x2d, 0x6f, 0x70, 0x65, 0x6e, 0x61, 0x70,
 	0x69, 0x76, 0x32, 0x2f, 0x6f, 0x70, 0x74, 0x69, 0x6f, 0x6e, 0x73, 0x2f, 0x61, 0x6e, 0x6e, 0x6f,
 	0x74, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x73, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x1a, 0x0d, 0x61,
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+	0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x69, 0x74, 0x73, 0x73, 0x63,
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 }
 
 var (
diff --git a/bff/pb/rpc_list_payments.pb.go b/bff/pb/rpc_list_payments.pb.go
index efe4992..4ddc2c1 100644
--- a/bff/pb/rpc_list_payments.pb.go
+++ b/bff/pb/rpc_list_payments.pb.go
@@ -26,7 +26,7 @@ type ListPaymentsRequest struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	AccountId int64 `protobuf:"varint,1,opt,name=account_id,json=accountId,proto3" json:"account_id,omitempty"`
+	AccountId uint64 `protobuf:"varint,1,opt,name=account_id,json=accountId,proto3" json:"account_id,omitempty"`
 }
 
 func (x *ListPaymentsRequest) Reset() {
@@ -61,7 +61,7 @@ func (*ListPaymentsRequest) Descriptor() ([]byte, []int) {
 	return file_rpc_list_payments_proto_rawDescGZIP(), []int{0}
 }
 
-func (x *ListPaymentsRequest) GetAccountId() int64 {
+func (x *ListPaymentsRequest) GetAccountId() uint64 {
 	if x != nil {
 		return x.AccountId
 	}
@@ -126,7 +126,7 @@ var file_rpc_list_payments_proto_rawDesc = []byte{
 	0x61, 0x79, 0x6d, 0x65, 0x6e, 0x74, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x22, 0x86, 0x01, 0x0a,
 	0x13, 0x4c, 0x69, 0x73, 0x74, 0x50, 0x61, 0x79, 0x6d, 0x65, 0x6e, 0x74, 0x73, 0x52, 0x65, 0x71,
 	0x75, 0x65, 0x73, 0x74, 0x12, 0x1d, 0x0a, 0x0a, 0x61, 0x63, 0x63, 0x6f, 0x75, 0x6e, 0x74, 0x5f,
-	0x69, 0x64, 0x18, 0x01, 0x20, 0x01, 0x28, 0x03, 0x52, 0x09, 0x61, 0x63, 0x63, 0x6f, 0x75, 0x6e,
+	0x69, 0x64, 0x18, 0x01, 0x20, 0x01, 0x28, 0x04, 0x52, 0x09, 0x61, 0x63, 0x63, 0x6f, 0x75, 0x6e,
 	0x74, 0x49, 0x64, 0x3a, 0x50, 0x92, 0x41, 0x4d, 0x0a, 0x37, 0x2a, 0x0c, 0x4c, 0x69, 0x73, 0x74,
 	0x50, 0x61, 0x79, 0x6d, 0x65, 0x6e, 0x74, 0x73, 0x32, 0x1a, 0x52, 0x65, 0x74, 0x75, 0x72, 0x6e,
 	0x73, 0x20, 0x61, 0x20, 0x4c, 0x69, 0x73, 0x74, 0x20, 0x6f, 0x66, 0x20, 0x50, 0x61, 0x79, 0x6d,
diff --git a/bff/pb/rpc_list_persons.pb.go b/bff/pb/rpc_list_persons.pb.go
index b579cbf..c3afc14 100644
--- a/bff/pb/rpc_list_persons.pb.go
+++ b/bff/pb/rpc_list_persons.pb.go
@@ -26,7 +26,7 @@ type ListPersonsRequest struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	AccountId int64 `protobuf:"varint,1,opt,name=account_id,json=accountId,proto3" json:"account_id,omitempty"`
+	AccountId uint64 `protobuf:"varint,1,opt,name=account_id,json=accountId,proto3" json:"account_id,omitempty"`
 }
 
 func (x *ListPersonsRequest) Reset() {
@@ -61,7 +61,7 @@ func (*ListPersonsRequest) Descriptor() ([]byte, []int) {
 	return file_rpc_list_persons_proto_rawDescGZIP(), []int{0}
 }
 
-func (x *ListPersonsRequest) GetAccountId() int64 {
+func (x *ListPersonsRequest) GetAccountId() uint64 {
 	if x != nil {
 		return x.AccountId
 	}
@@ -126,7 +126,7 @@ var file_rpc_list_persons_proto_rawDesc = []byte{
 	0x72, 0x73, 0x6f, 0x6e, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x22, 0x83, 0x01, 0x0a, 0x12, 0x4c,
 	0x69, 0x73, 0x74, 0x50, 0x65, 0x72, 0x73, 0x6f, 0x6e, 0x73, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73,
 	0x74, 0x12, 0x1d, 0x0a, 0x0a, 0x61, 0x63, 0x63, 0x6f, 0x75, 0x6e, 0x74, 0x5f, 0x69, 0x64, 0x18,
-	0x01, 0x20, 0x01, 0x28, 0x03, 0x52, 0x09, 0x61, 0x63, 0x63, 0x6f, 0x75, 0x6e, 0x74, 0x49, 0x64,
+	0x01, 0x20, 0x01, 0x28, 0x04, 0x52, 0x09, 0x61, 0x63, 0x63, 0x6f, 0x75, 0x6e, 0x74, 0x49, 0x64,
 	0x3a, 0x4e, 0x92, 0x41, 0x4b, 0x0a, 0x35, 0x2a, 0x0b, 0x4c, 0x69, 0x73, 0x74, 0x50, 0x65, 0x72,
 	0x73, 0x6f, 0x6e, 0x73, 0x32, 0x19, 0x52, 0x65, 0x74, 0x75, 0x72, 0x6e, 0x73, 0x20, 0x61, 0x20,
 	0x4c, 0x69, 0x73, 0x74, 0x20, 0x6f, 0x66, 0x20, 0x50, 0x65, 0x72, 0x73, 0x6f, 0x6e, 0x73, 0xd2,
diff --git a/bff/pb/rpc_list_sessions.pb.go b/bff/pb/rpc_list_sessions.pb.go
index 6be8491..187682d 100644
--- a/bff/pb/rpc_list_sessions.pb.go
+++ b/bff/pb/rpc_list_sessions.pb.go
@@ -26,7 +26,7 @@ type ListSessionsRequest struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	AccountId int64 `protobuf:"varint,1,opt,name=account_id,json=accountId,proto3" json:"account_id,omitempty"`
+	AccountId uint64 `protobuf:"varint,1,opt,name=account_id,json=accountId,proto3" json:"account_id,omitempty"`
 }
 
 func (x *ListSessionsRequest) Reset() {
@@ -61,7 +61,7 @@ func (*ListSessionsRequest) Descriptor() ([]byte, []int) {
 	return file_rpc_list_sessions_proto_rawDescGZIP(), []int{0}
 }
 
-func (x *ListSessionsRequest) GetAccountId() int64 {
+func (x *ListSessionsRequest) GetAccountId() uint64 {
 	if x != nil {
 		return x.AccountId
 	}
@@ -126,7 +126,7 @@ var file_rpc_list_sessions_proto_rawDesc = []byte{
 	0x65, 0x73, 0x73, 0x69, 0x6f, 0x6e, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x22, 0x98, 0x01, 0x0a,
 	0x13, 0x4c, 0x69, 0x73, 0x74, 0x53, 0x65, 0x73, 0x73, 0x69, 0x6f, 0x6e, 0x73, 0x52, 0x65, 0x71,
 	0x75, 0x65, 0x73, 0x74, 0x12, 0x2d, 0x0a, 0x0a, 0x61, 0x63, 0x63, 0x6f, 0x75, 0x6e, 0x74, 0x5f,
-	0x69, 0x64, 0x18, 0x01, 0x20, 0x01, 0x28, 0x03, 0x42, 0x0e, 0x92, 0x41, 0x0b, 0x4a, 0x01, 0x31,
+	0x69, 0x64, 0x18, 0x01, 0x20, 0x01, 0x28, 0x04, 0x42, 0x0e, 0x92, 0x41, 0x0b, 0x4a, 0x01, 0x31,
 	0xa2, 0x02, 0x05, 0x69, 0x6e, 0x74, 0x36, 0x34, 0x52, 0x09, 0x61, 0x63, 0x63, 0x6f, 0x75, 0x6e,
 	0x74, 0x49, 0x64, 0x3a, 0x52, 0x92, 0x41, 0x4f, 0x0a, 0x37, 0x2a, 0x0c, 0x4c, 0x69, 0x73, 0x74,
 	0x53, 0x65, 0x73, 0x73, 0x69, 0x6f, 0x6e, 0x73, 0x32, 0x1a, 0x52, 0x65, 0x74, 0x75, 0x72, 0x6e,
diff --git a/bff/pb/rpc_update_account.pb.go b/bff/pb/rpc_update_account.pb.go
index 872f02b..023c8ff 100644
--- a/bff/pb/rpc_update_account.pb.go
+++ b/bff/pb/rpc_update_account.pb.go
@@ -27,7 +27,7 @@ type UpdateAccountRequest struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	Id        int64                  `protobuf:"varint,1,opt,name=id,proto3" json:"id,omitempty"`
+	Id        uint64                 `protobuf:"varint,1,opt,name=id,proto3" json:"id,omitempty"`
 	Email     *string                `protobuf:"bytes,2,opt,name=email,proto3,oneof" json:"email,omitempty"`
 	Password  *string                `protobuf:"bytes,3,opt,name=password,proto3,oneof" json:"password,omitempty"`
 	Firstname *string                `protobuf:"bytes,4,opt,name=firstname,proto3,oneof" json:"firstname,omitempty"`
@@ -72,7 +72,7 @@ func (*UpdateAccountRequest) Descriptor() ([]byte, []int) {
 	return file_rpc_update_account_proto_rawDescGZIP(), []int{0}
 }
 
-func (x *UpdateAccountRequest) GetId() int64 {
+func (x *UpdateAccountRequest) GetId() uint64 {
 	if x != nil {
 		return x.Id
 	}
@@ -209,7 +209,7 @@ var file_rpc_update_account_proto_rawDesc = []byte{
 	0x0d, 0x61, 0x63, 0x63, 0x6f, 0x75, 0x6e, 0x74, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x22, 0xce,
 	0x04, 0x0a, 0x14, 0x55, 0x70, 0x64, 0x61, 0x74, 0x65, 0x41, 0x63, 0x63, 0x6f, 0x75, 0x6e, 0x74,
 	0x52, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x12, 0x0e, 0x0a, 0x02, 0x69, 0x64, 0x18, 0x01, 0x20,
-	0x01, 0x28, 0x03, 0x52, 0x02, 0x69, 0x64, 0x12, 0x19, 0x0a, 0x05, 0x65, 0x6d, 0x61, 0x69, 0x6c,
+	0x01, 0x28, 0x04, 0x52, 0x02, 0x69, 0x64, 0x12, 0x19, 0x0a, 0x05, 0x65, 0x6d, 0x61, 0x69, 0x6c,
 	0x18, 0x02, 0x20, 0x01, 0x28, 0x09, 0x48, 0x00, 0x52, 0x05, 0x65, 0x6d, 0x61, 0x69, 0x6c, 0x88,
 	0x01, 0x01, 0x12, 0x1f, 0x0a, 0x08, 0x70, 0x61, 0x73, 0x73, 0x77, 0x6f, 0x72, 0x64, 0x18, 0x03,
 	0x20, 0x01, 0x28, 0x09, 0x48, 0x01, 0x52, 0x08, 0x70, 0x61, 0x73, 0x73, 0x77, 0x6f, 0x72, 0x64,
diff --git a/bff/pb/rpc_update_account_privacy.pb.go b/bff/pb/rpc_update_account_privacy.pb.go
index 14b3f05..7383e11 100644
--- a/bff/pb/rpc_update_account_privacy.pb.go
+++ b/bff/pb/rpc_update_account_privacy.pb.go
@@ -26,8 +26,8 @@ type UpdateAccountPrivacyRequest struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	Id              int64 `protobuf:"varint,1,opt,name=id,proto3" json:"id,omitempty"`
-	PrivacyAccepted *bool `protobuf:"varint,2,opt,name=privacy_accepted,json=privacyAccepted,proto3,oneof" json:"privacy_accepted,omitempty"`
+	Id              uint64 `protobuf:"varint,1,opt,name=id,proto3" json:"id,omitempty"`
+	PrivacyAccepted *bool  `protobuf:"varint,2,opt,name=privacy_accepted,json=privacyAccepted,proto3,oneof" json:"privacy_accepted,omitempty"`
 }
 
 func (x *UpdateAccountPrivacyRequest) Reset() {
@@ -62,7 +62,7 @@ func (*UpdateAccountPrivacyRequest) Descriptor() ([]byte, []int) {
 	return file_rpc_update_account_privacy_proto_rawDescGZIP(), []int{0}
 }
 
-func (x *UpdateAccountPrivacyRequest) GetId() int64 {
+func (x *UpdateAccountPrivacyRequest) GetId() uint64 {
 	if x != nil {
 		return x.Id
 	}
@@ -135,7 +135,7 @@ var file_rpc_update_account_privacy_proto_rawDesc = []byte{
 	0x70, 0x72, 0x6f, 0x74, 0x6f, 0x22, 0xa1, 0x02, 0x0a, 0x1b, 0x55, 0x70, 0x64, 0x61, 0x74, 0x65,
 	0x41, 0x63, 0x63, 0x6f, 0x75, 0x6e, 0x74, 0x50, 0x72, 0x69, 0x76, 0x61, 0x63, 0x79, 0x52, 0x65,
 	0x71, 0x75, 0x65, 0x73, 0x74, 0x12, 0x1e, 0x0a, 0x02, 0x69, 0x64, 0x18, 0x01, 0x20, 0x01, 0x28,
-	0x03, 0x42, 0x0e, 0x92, 0x41, 0x0b, 0x4a, 0x01, 0x31, 0xa2, 0x02, 0x05, 0x69, 0x6e, 0x74, 0x36,
+	0x04, 0x42, 0x0e, 0x92, 0x41, 0x0b, 0x4a, 0x01, 0x31, 0xa2, 0x02, 0x05, 0x69, 0x6e, 0x74, 0x36,
 	0x34, 0x52, 0x02, 0x69, 0x64, 0x12, 0x3a, 0x0a, 0x10, 0x70, 0x72, 0x69, 0x76, 0x61, 0x63, 0x79,
 	0x5f, 0x61, 0x63, 0x63, 0x65, 0x70, 0x74, 0x65, 0x64, 0x18, 0x02, 0x20, 0x01, 0x28, 0x08, 0x42,
 	0x0a, 0x92, 0x41, 0x07, 0x4a, 0x05, 0x66, 0x61, 0x6c, 0x73, 0x65, 0x48, 0x00, 0x52, 0x0f, 0x70,
diff --git a/bff/pb/rpc_update_payment.pb.go b/bff/pb/rpc_update_payment.pb.go
index d8480e7..74230f0 100644
--- a/bff/pb/rpc_update_payment.pb.go
+++ b/bff/pb/rpc_update_payment.pb.go
@@ -26,7 +26,7 @@ type UpdatePaymentRequest struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	Id              int64   `protobuf:"varint,1,opt,name=id,proto3" json:"id,omitempty"`
+	Id              uint64  `protobuf:"varint,1,opt,name=id,proto3" json:"id,omitempty"`
 	PaymentCategory *string `protobuf:"bytes,2,opt,name=payment_category,json=paymentCategory,proto3,oneof" json:"payment_category,omitempty"`
 	Bankname        *string `protobuf:"bytes,3,opt,name=bankname,proto3,oneof" json:"bankname,omitempty"`
 	IBAN            *string `protobuf:"bytes,4,opt,name=IBAN,proto3,oneof" json:"IBAN,omitempty"`
@@ -69,7 +69,7 @@ func (*UpdatePaymentRequest) Descriptor() ([]byte, []int) {
 	return file_rpc_update_payment_proto_rawDescGZIP(), []int{0}
 }
 
-func (x *UpdatePaymentRequest) GetId() int64 {
+func (x *UpdatePaymentRequest) GetId() uint64 {
 	if x != nil {
 		return x.Id
 	}
@@ -190,7 +190,7 @@ var file_rpc_update_payment_proto_rawDesc = []byte{
 	0x70, 0x61, 0x79, 0x6d, 0x65, 0x6e, 0x74, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x22, 0x9c, 0x05,
 	0x0a, 0x14, 0x55, 0x70, 0x64, 0x61, 0x74, 0x65, 0x50, 0x61, 0x79, 0x6d, 0x65, 0x6e, 0x74, 0x52,
 	0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x12, 0x0e, 0x0a, 0x02, 0x69, 0x64, 0x18, 0x01, 0x20, 0x01,
-	0x28, 0x03, 0x52, 0x02, 0x69, 0x64, 0x12, 0x2e, 0x0a, 0x10, 0x70, 0x61, 0x79, 0x6d, 0x65, 0x6e,
+	0x28, 0x04, 0x52, 0x02, 0x69, 0x64, 0x12, 0x2e, 0x0a, 0x10, 0x70, 0x61, 0x79, 0x6d, 0x65, 0x6e,
 	0x74, 0x5f, 0x63, 0x61, 0x74, 0x65, 0x67, 0x6f, 0x72, 0x79, 0x18, 0x02, 0x20, 0x01, 0x28, 0x09,
 	0x48, 0x00, 0x52, 0x0f, 0x70, 0x61, 0x79, 0x6d, 0x65, 0x6e, 0x74, 0x43, 0x61, 0x74, 0x65, 0x67,
 	0x6f, 0x72, 0x79, 0x88, 0x01, 0x01, 0x12, 0x1f, 0x0a, 0x08, 0x62, 0x61, 0x6e, 0x6b, 0x6e, 0x61,
diff --git a/bff/pb/service_df.pb.gw.go b/bff/pb/service_df.pb.gw.go
index 0de93ce..37cf0ae 100644
--- a/bff/pb/service_df.pb.gw.go
+++ b/bff/pb/service_df.pb.gw.go
@@ -115,7 +115,7 @@ func request_Df_ListSessions_0(ctx context.Context, marshaler runtime.Marshaler,
 		return nil, metadata, status.Errorf(codes.InvalidArgument, "missing parameter %s", "account_id")
 	}
 
-	protoReq.AccountId, err = runtime.Int64(val)
+	protoReq.AccountId, err = runtime.Uint64(val)
 	if err != nil {
 		return nil, metadata, status.Errorf(codes.InvalidArgument, "type mismatch, parameter: %s, error: %v", "account_id", err)
 	}
@@ -141,7 +141,7 @@ func local_request_Df_ListSessions_0(ctx context.Context, marshaler runtime.Mars
 		return nil, metadata, status.Errorf(codes.InvalidArgument, "missing parameter %s", "account_id")
 	}
 
-	protoReq.AccountId, err = runtime.Int64(val)
+	protoReq.AccountId, err = runtime.Uint64(val)
 	if err != nil {
 		return nil, metadata, status.Errorf(codes.InvalidArgument, "type mismatch, parameter: %s, error: %v", "account_id", err)
 	}
@@ -201,7 +201,7 @@ func request_Df_GetAccount_0(ctx context.Context, marshaler runtime.Marshaler, c
 		return nil, metadata, status.Errorf(codes.InvalidArgument, "missing parameter %s", "id")
 	}
 
-	protoReq.Id, err = runtime.Int64(val)
+	protoReq.Id, err = runtime.Uint64(val)
 	if err != nil {
 		return nil, metadata, status.Errorf(codes.InvalidArgument, "type mismatch, parameter: %s, error: %v", "id", err)
 	}
@@ -227,7 +227,7 @@ func local_request_Df_GetAccount_0(ctx context.Context, marshaler runtime.Marsha
 		return nil, metadata, status.Errorf(codes.InvalidArgument, "missing parameter %s", "id")
 	}
 
-	protoReq.Id, err = runtime.Int64(val)
+	protoReq.Id, err = runtime.Uint64(val)
 	if err != nil {
 		return nil, metadata, status.Errorf(codes.InvalidArgument, "type mismatch, parameter: %s, error: %v", "id", err)
 	}
@@ -425,7 +425,7 @@ func request_Df_GetPerson_0(ctx context.Context, marshaler runtime.Marshaler, cl
 		return nil, metadata, status.Errorf(codes.InvalidArgument, "missing parameter %s", "id")
 	}
 
-	protoReq.Id, err = runtime.Int64(val)
+	protoReq.Id, err = runtime.Uint64(val)
 	if err != nil {
 		return nil, metadata, status.Errorf(codes.InvalidArgument, "type mismatch, parameter: %s, error: %v", "id", err)
 	}
@@ -451,7 +451,7 @@ func local_request_Df_GetPerson_0(ctx context.Context, marshaler runtime.Marshal
 		return nil, metadata, status.Errorf(codes.InvalidArgument, "missing parameter %s", "id")
 	}
 
-	protoReq.Id, err = runtime.Int64(val)
+	protoReq.Id, err = runtime.Uint64(val)
 	if err != nil {
 		return nil, metadata, status.Errorf(codes.InvalidArgument, "type mismatch, parameter: %s, error: %v", "id", err)
 	}
@@ -477,7 +477,7 @@ func request_Df_DeletePerson_0(ctx context.Context, marshaler runtime.Marshaler,
 		return nil, metadata, status.Errorf(codes.InvalidArgument, "missing parameter %s", "id")
 	}
 
-	protoReq.Id, err = runtime.Int64(val)
+	protoReq.Id, err = runtime.Uint64(val)
 	if err != nil {
 		return nil, metadata, status.Errorf(codes.InvalidArgument, "type mismatch, parameter: %s, error: %v", "id", err)
 	}
@@ -503,7 +503,7 @@ func local_request_Df_DeletePerson_0(ctx context.Context, marshaler runtime.Mars
 		return nil, metadata, status.Errorf(codes.InvalidArgument, "missing parameter %s", "id")
 	}
 
-	protoReq.Id, err = runtime.Int64(val)
+	protoReq.Id, err = runtime.Uint64(val)
 	if err != nil {
 		return nil, metadata, status.Errorf(codes.InvalidArgument, "type mismatch, parameter: %s, error: %v", "id", err)
 	}
@@ -529,7 +529,7 @@ func request_Df_ListPersons_0(ctx context.Context, marshaler runtime.Marshaler,
 		return nil, metadata, status.Errorf(codes.InvalidArgument, "missing parameter %s", "account_id")
 	}
 
-	protoReq.AccountId, err = runtime.Int64(val)
+	protoReq.AccountId, err = runtime.Uint64(val)
 	if err != nil {
 		return nil, metadata, status.Errorf(codes.InvalidArgument, "type mismatch, parameter: %s, error: %v", "account_id", err)
 	}
@@ -555,7 +555,7 @@ func local_request_Df_ListPersons_0(ctx context.Context, marshaler runtime.Marsh
 		return nil, metadata, status.Errorf(codes.InvalidArgument, "missing parameter %s", "account_id")
 	}
 
-	protoReq.AccountId, err = runtime.Int64(val)
+	protoReq.AccountId, err = runtime.Uint64(val)
 	if err != nil {
 		return nil, metadata, status.Errorf(codes.InvalidArgument, "type mismatch, parameter: %s, error: %v", "account_id", err)
 	}
@@ -615,7 +615,7 @@ func request_Df_GetPayment_0(ctx context.Context, marshaler runtime.Marshaler, c
 		return nil, metadata, status.Errorf(codes.InvalidArgument, "missing parameter %s", "id")
 	}
 
-	protoReq.Id, err = runtime.Int64(val)
+	protoReq.Id, err = runtime.Uint64(val)
 	if err != nil {
 		return nil, metadata, status.Errorf(codes.InvalidArgument, "type mismatch, parameter: %s, error: %v", "id", err)
 	}
@@ -641,7 +641,7 @@ func local_request_Df_GetPayment_0(ctx context.Context, marshaler runtime.Marsha
 		return nil, metadata, status.Errorf(codes.InvalidArgument, "missing parameter %s", "id")
 	}
 
-	protoReq.Id, err = runtime.Int64(val)
+	protoReq.Id, err = runtime.Uint64(val)
 	if err != nil {
 		return nil, metadata, status.Errorf(codes.InvalidArgument, "type mismatch, parameter: %s, error: %v", "id", err)
 	}
@@ -667,7 +667,7 @@ func request_Df_DeletePayment_0(ctx context.Context, marshaler runtime.Marshaler
 		return nil, metadata, status.Errorf(codes.InvalidArgument, "missing parameter %s", "id")
 	}
 
-	protoReq.Id, err = runtime.Int64(val)
+	protoReq.Id, err = runtime.Uint64(val)
 	if err != nil {
 		return nil, metadata, status.Errorf(codes.InvalidArgument, "type mismatch, parameter: %s, error: %v", "id", err)
 	}
@@ -693,7 +693,7 @@ func local_request_Df_DeletePayment_0(ctx context.Context, marshaler runtime.Mar
 		return nil, metadata, status.Errorf(codes.InvalidArgument, "missing parameter %s", "id")
 	}
 
-	protoReq.Id, err = runtime.Int64(val)
+	protoReq.Id, err = runtime.Uint64(val)
 	if err != nil {
 		return nil, metadata, status.Errorf(codes.InvalidArgument, "type mismatch, parameter: %s, error: %v", "id", err)
 	}
@@ -719,7 +719,7 @@ func request_Df_ListPayments_0(ctx context.Context, marshaler runtime.Marshaler,
 		return nil, metadata, status.Errorf(codes.InvalidArgument, "missing parameter %s", "account_id")
 	}
 
-	protoReq.AccountId, err = runtime.Int64(val)
+	protoReq.AccountId, err = runtime.Uint64(val)
 	if err != nil {
 		return nil, metadata, status.Errorf(codes.InvalidArgument, "type mismatch, parameter: %s, error: %v", "account_id", err)
 	}
@@ -745,7 +745,7 @@ func local_request_Df_ListPayments_0(ctx context.Context, marshaler runtime.Mars
 		return nil, metadata, status.Errorf(codes.InvalidArgument, "missing parameter %s", "account_id")
 	}
 
-	protoReq.AccountId, err = runtime.Int64(val)
+	protoReq.AccountId, err = runtime.Uint64(val)
 	if err != nil {
 		return nil, metadata, status.Errorf(codes.InvalidArgument, "type mismatch, parameter: %s, error: %v", "account_id", err)
 	}
diff --git a/bff/proto/account.proto b/bff/proto/account.proto
index 6f45c1d..4ceff8d 100644
--- a/bff/proto/account.proto
+++ b/bff/proto/account.proto
@@ -14,7 +14,7 @@ message Account {
         };
         example: "{\"id\": \"1\",\"email\": \"john.doe@example.com\", \"firstname\": \"John\", \"lastname\": \"Doe\", \"phone\": \"\", \"street\": \"Death Star 2\", \"zip\": \"0815\", \"city\": \"New York\", \"country\": \"USA\", \"birthday\": \"1990-10-05T00:00:00Z\", \"privacy_accepted\": false, \"privacy_accepted_date\": \"0001-01-01T00:00:00Z\", \"creator\": \"john.doe@example.com\", \"created\": \"2023-10-05T02:30:53Z\", \"changer\": \"john.doe@example.com\", \"changed\": \"2023-10-05T02:30:53Z\"}";
     };
-    int64 id = 1;
+    uint64 id = 1;
     string email = 2;
     string firstname = 3;
     string lastname = 4;
diff --git a/bff/proto/payment.proto b/bff/proto/payment.proto
index 93c16a6..8d3be92 100644
--- a/bff/proto/payment.proto
+++ b/bff/proto/payment.proto
@@ -14,8 +14,8 @@ message Payment {
         };
         example: "{\"id\": \"1\",\"account_id\": \"1\", \"payment_category\": \"TBD: paypal\", \"paypal_account\": \"john.doe@example.com\", \"paypal_id\": \"this-is-a-paypal-id\", \"payment_system\": \"TBD: paypal system\", \"type\": \"TBD: some type\", \"creator\": \"john.doe@example.com\", \"created\": \"2023-10-05T02:30:53Z\", \"changer\": \"john.doe@example.com\", \"changed\": \"2023-10-05T02:30:53Z\"}";
     };
-    int64 id = 1;
-    int64 account_id = 2;
+    uint64 id = 1;
+    uint64 account_id = 2;
     string payment_category = 3;
     optional string bankname = 4;
     optional string IBAN = 5;
diff --git a/bff/proto/person.proto b/bff/proto/person.proto
index 49921e1..abe8acd 100644
--- a/bff/proto/person.proto
+++ b/bff/proto/person.proto
@@ -14,8 +14,8 @@ message Person {
         };
         example: "{\"id\": \"1\",\"email\": \"john.doe@example.com\", \"firstname\": \"John\", \"lastname\": \"Doe\", \"phone\": \"\", \"street\": \"Death Star 2\", \"zip\": \"0815\", \"city\": \"New York\", \"country\": \"USA\", \"birthday\": \"1990-10-05T00:00:00Z\", \"privacy_accepted\": false, \"privacy_accepted_date\": \"0001-01-01T00:00:00Z\", \"creator\": \"john.doe@example.com\", \"created\": \"2023-10-05T02:30:53Z\", \"changer\": \"john.doe@example.com\", \"changed\": \"2023-10-05T02:30:53Z\"}";
     };
-    int64 id = 1;
-    int64 account_id = 2;
+    uint64 id = 1;
+    uint64 account_id = 2;
     string firstname = 3;
     string lastname = 4;
     string street = 5;
diff --git a/bff/proto/rpc_create_payment.proto b/bff/proto/rpc_create_payment.proto
index d8149d9..08bc07e 100644
--- a/bff/proto/rpc_create_payment.proto
+++ b/bff/proto/rpc_create_payment.proto
@@ -16,13 +16,12 @@ message CreatePaymentRequest {
           required: [
             "account_id",
             "payment_category",
-            "payment_system",
             "type"
             ];
         };
         example: "{\"account_id\": \"1\", \"payment_category\": \"TBD: paypal\", \"paypal_account\": \"john.doe@example.com\", \"paypal_id\": \"this-is-a-paypal-id\", \"payment_system\": \"TBD: paypal system\", \"type\": \"TBD: some type\"}";
     };
-    int64 account_id = 1;
+    uint64 account_id = 1;
     string payment_category = 2;
     optional string bankname = 3;
     optional string IBAN = 4;
diff --git a/bff/proto/rpc_create_person.proto b/bff/proto/rpc_create_person.proto
index 01c3bd1..a45e0ae 100644
--- a/bff/proto/rpc_create_person.proto
+++ b/bff/proto/rpc_create_person.proto
@@ -15,6 +15,7 @@ message CreatePersonRequest {
           title: "Create Person";
           description: "Create an Person";
           required: [
+            "account_id",
             "firstname",
             "lastname",
             "street",
@@ -26,7 +27,7 @@ message CreatePersonRequest {
         };
         example: "{ \"account_id\": \"1\", \"firstname\": \"John\", \"lastname\": \"Doe\", \"street\": \"Main Street 1\", \"zip\": \"0815\", \"city\": \"New York\", \"country\": \"USA\", \"birthday\": \"1990-10-05T00:00:00Z\"}";
     };
-    int64 account_id = 1;
+    uint64 account_id = 1;
     string firstname = 2;
     string lastname = 3;
     string street = 4;
diff --git a/bff/proto/rpc_delete_payment.proto b/bff/proto/rpc_delete_payment.proto
index f22fe79..7e01512 100644
--- a/bff/proto/rpc_delete_payment.proto
+++ b/bff/proto/rpc_delete_payment.proto
@@ -17,7 +17,7 @@ message DeletePaymentRequest {
         };
         example: "{\"id\": \"1\"}"
     };
-    int64 id = 1;
+    uint64 id = 1;
 }
 
 message DeletePaymentResponse {
diff --git a/bff/proto/rpc_delete_person.proto b/bff/proto/rpc_delete_person.proto
index 91082b1..5f7345f 100644
--- a/bff/proto/rpc_delete_person.proto
+++ b/bff/proto/rpc_delete_person.proto
@@ -17,7 +17,7 @@ message DeletePersonRequest {
         };
         example: "{\"id\": \"1\"}"
     };
-    int64 id = 1;
+    uint64 id = 1;
 }
 
 message DeletePersonResponse {
diff --git a/bff/proto/rpc_get_account.proto b/bff/proto/rpc_get_account.proto
index 0575226..48344f1 100644
--- a/bff/proto/rpc_get_account.proto
+++ b/bff/proto/rpc_get_account.proto
@@ -19,7 +19,7 @@ message GetAccountRequest {
         };
         example: "{\"id\": \"1\" }";
     };
-    int64 id = 1;
+    uint64 id = 1;
 }
 
 message GetAccountResponse {
diff --git a/bff/proto/rpc_get_payment.proto b/bff/proto/rpc_get_payment.proto
index 576a2f3..fa47beb 100644
--- a/bff/proto/rpc_get_payment.proto
+++ b/bff/proto/rpc_get_payment.proto
@@ -19,7 +19,7 @@ message GetPaymentRequest {
         };
         example: "{\"id\": \"1\" }";
     };
-    int64 id = 1;
+    uint64 id = 1;
 }
 
 message GetPaymentResponse {
diff --git a/bff/proto/rpc_get_person.proto b/bff/proto/rpc_get_person.proto
index 9fe31e4..927d203 100644
--- a/bff/proto/rpc_get_person.proto
+++ b/bff/proto/rpc_get_person.proto
@@ -19,7 +19,7 @@ message GetPersonRequest {
         };
         example: "{\"id\": \"1\" }";
     };
-    int64 id = 1;
+    uint64 id = 1;
 }
 
 message GetPersonResponse {
diff --git a/bff/proto/rpc_list_accounts.proto b/bff/proto/rpc_list_accounts.proto
index f972bfa..6426b3e 100644
--- a/bff/proto/rpc_list_accounts.proto
+++ b/bff/proto/rpc_list_accounts.proto
@@ -14,13 +14,14 @@ message ListAccountsRequest {
           title: "ListAccounts";
           description: "Returns a List of Accounts";
           required: [
-            "id"
+            "page_id",
+            "page_size"
             ];
         };
         example: "{\"page_id\": 1, \"page_size\": 10 }";
     };
-    int32 page_id = 1;
-    int32 page_size = 2;
+    uint32 page_id = 1;
+    uint32 page_size = 2;
 }
 
 message ListAccountsResponse {
diff --git a/bff/proto/rpc_list_payments.proto b/bff/proto/rpc_list_payments.proto
index fa7ffb3..d004626 100644
--- a/bff/proto/rpc_list_payments.proto
+++ b/bff/proto/rpc_list_payments.proto
@@ -19,7 +19,7 @@ message ListPaymentsRequest {
         };
         example: "{\"account_id\": 1 }";
     };
-    int64 account_id = 1;
+    uint64 account_id = 1;
 }
 
 message ListPaymentsResponse {
diff --git a/bff/proto/rpc_list_persons.proto b/bff/proto/rpc_list_persons.proto
index 848af46..605c6be 100644
--- a/bff/proto/rpc_list_persons.proto
+++ b/bff/proto/rpc_list_persons.proto
@@ -19,7 +19,7 @@ message ListPersonsRequest {
         };
         example: "{\"account_id\": 1 }";
     };
-    int64 account_id = 1;
+    uint64 account_id = 1;
 }
 
 message ListPersonsResponse {
diff --git a/bff/proto/rpc_list_sessions.proto b/bff/proto/rpc_list_sessions.proto
index e0a4cdd..5bc3d73 100644
--- a/bff/proto/rpc_list_sessions.proto
+++ b/bff/proto/rpc_list_sessions.proto
@@ -19,7 +19,7 @@ message ListSessionsRequest {
         };
         example: "{\"account_id\": \"1\" }";
     };
-    int64 account_id = 1 [(grpc.gateway.protoc_gen_openapiv2.options.openapiv2_field) = {
+    uint64 account_id = 1 [(grpc.gateway.protoc_gen_openapiv2.options.openapiv2_field) = {
       example: "1",
       format: "int64"
     }];
diff --git a/bff/proto/rpc_update_account.proto b/bff/proto/rpc_update_account.proto
index 689c4d7..9f6e92e 100644
--- a/bff/proto/rpc_update_account.proto
+++ b/bff/proto/rpc_update_account.proto
@@ -20,7 +20,7 @@ message UpdateAccountRequest {
         };
         example: "{\"id\": \"1\", \"street\": \"Death Star 2\"}";
     };
-    int64 id = 1;
+    uint64 id = 1;
     optional string email = 2;
     optional string password = 3;
     optional string firstname = 4;
diff --git a/bff/proto/rpc_update_account_privacy.proto b/bff/proto/rpc_update_account_privacy.proto
index dbba084..01f67f8 100644
--- a/bff/proto/rpc_update_account_privacy.proto
+++ b/bff/proto/rpc_update_account_privacy.proto
@@ -20,7 +20,7 @@ message UpdateAccountPrivacyRequest {
         };
         example: "{\"id\": \"1\", \"privacy_accepted\": true }"
     };
-    int64 id = 1 [(grpc.gateway.protoc_gen_openapiv2.options.openapiv2_field) = {
+    uint64 id = 1 [(grpc.gateway.protoc_gen_openapiv2.options.openapiv2_field) = {
         example: "1",
         format: "int64"
       }];
diff --git a/bff/proto/rpc_update_payment.proto b/bff/proto/rpc_update_payment.proto
index 59b911d..2207dc6 100644
--- a/bff/proto/rpc_update_payment.proto
+++ b/bff/proto/rpc_update_payment.proto
@@ -19,7 +19,7 @@ message UpdatePaymentRequest {
         };
         example: "{\"id\": \"1\", \"payment_category\": \"TBD: paypal\", \"paypal_account\": \"john.doe@example.com\", \"paypal_id\": \"this-is-a-paypal-id\", \"payment_system\": \"TBD: paypal system\", \"type\": \"TBD: some type\"}";
     };
-    int64 id = 1;
+    uint64 id = 1;
     optional string payment_category = 2;
     optional string bankname = 3;
     optional string IBAN = 4;
diff --git a/bff/sqlc.yaml b/bff/sqlc.yaml
index 93d369b..92a4550 100644
--- a/bff/sqlc.yaml
+++ b/bff/sqlc.yaml
@@ -13,6 +13,11 @@ sql:
         emit_empty_slices: true
         emit_exact_table_names: false
         overrides:
+          - db_type: "bigserial"
+            go_type: "uint64"
+          - db_type: "bigint"
+            null: false
+            go_type: "uint64"
           - db_type: "timestamptz"
             go_type: "time.Time"
           - db_type: "uuid"
diff --git a/bff/util/random.go b/bff/util/random.go
index 105e238..4d737b2 100644
--- a/bff/util/random.go
+++ b/bff/util/random.go
@@ -9,8 +9,8 @@ const alphabet = "abcdefghijklmnopqrstuvwxyz"
 const numbers = "0123456789"
 
 // RandomInt generates a random number between min and max
-func RandomInt(min, max int64) int64 {
-	return min + rand.Int63n(max-min+1)
+func RandomInt(min, max int64) uint64 {
+	return uint64(min + rand.Int63n(max-min+1))
 }
 
 // RandomString generates a random string of length n