diff --git a/src/main/java/com/cMall/feedShop/user/application/service/MfaServiceImpl.java b/src/main/java/com/cMall/feedShop/user/application/service/MfaServiceImpl.java
index 8f9a9882..02028b21 100644
--- a/src/main/java/com/cMall/feedShop/user/application/service/MfaServiceImpl.java
+++ b/src/main/java/com/cMall/feedShop/user/application/service/MfaServiceImpl.java
@@ -282,8 +282,7 @@ public boolean verifyBackupCode(String email, String backupCode) {
         }
     }
 
-    @Transactional(propagation = Propagation.REQUIRES_NEW)
-    public boolean verifyBackupCodeInNewTransaction(String email, String backupCode) {
+    private boolean verifyBackupCodeInNewTransaction(String email, String backupCode) {
         String maskedEmail = LogMaskingUtil.maskEmail(email);
         String maskedBackupCode = LogMaskingUtil.maskBackupCode(backupCode);
         
diff --git a/src/main/java/com/cMall/feedShop/user/infrastructure/oauth/CustomOAuth2UserService.java b/src/main/java/com/cMall/feedShop/user/infrastructure/oauth/CustomOAuth2UserService.java
index d71cdb1f..6ad3c3a4 100644
--- a/src/main/java/com/cMall/feedShop/user/infrastructure/oauth/CustomOAuth2UserService.java
+++ b/src/main/java/com/cMall/feedShop/user/infrastructure/oauth/CustomOAuth2UserService.java
@@ -41,8 +41,7 @@ public OAuth2User loadUser(OAuth2UserRequest userRequest) throws OAuth2Authentic
         }
     }
 
-    @Transactional(propagation = Propagation.REQUIRES_NEW)
-    public OAuth2User processAndSaveOAuth2UserInNewTransaction(OAuth2UserRequest userRequest, OAuth2User oAuth2User) {
+    private OAuth2User processAndSaveOAuth2UserInNewTransaction(OAuth2UserRequest userRequest, OAuth2User oAuth2User) {
         // 1. Get user info (same as before)
         String registrationId = userRequest.getClientRegistration().getRegistrationId();
         OAuth2UserInfo oAuth2UserInfo = OAuth2UserInfoFactory.getOAuth2UserInfo(registrationId, oAuth2User.getAttributes());