diff --git a/services/group_manager/src/group_operation/group_operation_common.c b/services/group_manager/src/group_operation/group_operation_common.c
index 491c843..e429f73 100644
--- a/services/group_manager/src/group_operation/group_operation_common.c
+++ b/services/group_manager/src/group_operation/group_operation_common.c
@@ -705,9 +705,9 @@ int32_t AddUdidToParams(TrustedDeviceEntry *devParams)
 int32_t AddAuthIdToParamsOrDefault(const CJson *jsonParams, TrustedDeviceEntry *devParams)
 {
     const char *authId = GetStringFromJson(jsonParams, FIELD_DEVICE_ID);
+    char udid[INPUT_UDID_LEN] = { 0 };
     if (authId == NULL) {
         LOGD("No authId is found. The default value is udid!");
-        char udid[INPUT_UDID_LEN] = { 0 };
         int32_t res = HcGetUdid((uint8_t *)udid, INPUT_UDID_LEN);
         if (res != HC_SUCCESS) {
             LOGE("Failed to get local udid! res: %d", res);
@@ -983,7 +983,7 @@ int32_t ProcessKeyPair(int action, const CJson *jsonParams, const char *groupId)
             LOGE("Failed to get local udid! res: %d", res);
             return HC_ERR_DB;
         }
-        authId = (char *)udid;
+        authId = udid;
     }
     int32_t userType = DEVICE_TYPE_ACCESSORY;
     (void)GetIntFromJson(jsonParams, FIELD_USER_TYPE, &userType);
diff --git a/services/group_manager/src/session/bind_session/bind_session_common.c b/services/group_manager/src/session/bind_session/bind_session_common.c
index 2e52a03..0d9a6d8 100644
--- a/services/group_manager/src/session/bind_session/bind_session_common.c
+++ b/services/group_manager/src/session/bind_session/bind_session_common.c
@@ -486,18 +486,15 @@ static int32_t AddAuthIdAndUserTypeIfValidOrDefault(int32_t osAccountId, const c
         return HC_ERR_INVALID_PARAMS;
     }
     const char *authId = GetStringFromJson(jsonParams, FIELD_DEVICE_ID);
+    char udid[INPUT_UDID_LEN] = { 0 };
     if (authId == NULL) {
         LOGD("No authId is found. The default value is udid!");
-        char udid[INPUT_UDID_LEN] = { 0 };
         int32_t res = HcGetUdid((uint8_t *)udid, INPUT_UDID_LEN);
         if (res != HC_SUCCESS) {
             LOGE("Failed to get local udid! res: %d", res);
             return HC_ERR_DB;
         }
         authId = udid;
-        if (authId == NULL) {
-            return HC_ERR_DB;
-        }
     }
     int32_t result = CheckAuthIdAndUserTypeValid(osAccountId, userType, groupId, authId);
     if (result != HC_SUCCESS) {