diff --git a/internal/services/bank_account_service.go b/internal/services/bank_account_service.go
index 462bd05..52acc0e 100644
--- a/internal/services/bank_account_service.go
+++ b/internal/services/bank_account_service.go
@@ -1,49 +1,12 @@
 package services
 
 import (
-	"GoMembership/internal/models"
 	"GoMembership/internal/repositories"
-	"crypto/rand"
-	"encoding/hex"
-	"fmt"
-	"strconv"
-	"time"
 )
 
 type BankAccountServiceInterface interface {
-	RegisterBankAccount(bankAccount *models.BankAccount) (int64, error)
 }
 
 type BankAccountService struct {
 	Repo repositories.BankAccountRepositoryInterface
 }
-
-func (service *BankAccountService) RegisterBankAccount(bankAccount *models.BankAccount) (int64, error) {
-	bankAccount.MandateDateSigned = time.Now()
-	ref, err := generateSEPAMandateReference(strconv.FormatInt(bankAccount.UserID, 10))
-	if err != nil {
-		return -1, err
-	}
-	bankAccount.MandateReference = ref
-
-	return service.Repo.CreateBankAccount(bankAccount)
-}
-
-func generateUniqueID(length int) (string, error) {
-	bytes := make([]byte, length)
-	_, err := rand.Read(bytes)
-	if err != nil {
-		return "", err
-	}
-	return hex.EncodeToString(bytes), nil
-}
-
-func generateSEPAMandateReference(userID string) (string, error) {
-	today := time.Now().Format("20060102") // Format YYYYMMDD
-	uniqueID, err := generateUniqueID(4)   // 4 Bytes = 8 Hex-Zeichen
-	if err != nil {
-		return "", err
-	}
-	mandateReference := fmt.Sprintf("%s-%s-%s", userID, today, uniqueID)
-	return mandateReference, nil
-}