diff --git a/FrontendWebApi/ApiControllers/TenantBillController.cs b/FrontendWebApi/ApiControllers/TenantBillController.cs
index b78f3a8..d2a85d8 100644
--- a/FrontendWebApi/ApiControllers/TenantBillController.cs
+++ b/FrontendWebApi/ApiControllers/TenantBillController.cs
@@ -109,6 +109,7 @@ namespace FrontendWebApi.ApiControllers
                 apiResult.Msg = "新增用戶失敗。";
                 if (exception.Message.Contains($" for key 'PRIMARY'"))
                 {
+                    apiResult.Code = "0001";
                     apiResult.Msg = "已有相同使用者。";
                 }
                 Logger.LogError("【" + controllerName + "/" + actionName + "】" + exception.Message);
@@ -143,6 +144,7 @@ namespace FrontendWebApi.ApiControllers
                 apiResult.Msg = "修改失敗。";
                 if (exception.Message.Contains($"a foreign key constraint"))
                 {
+                    apiResult.Code = "0001";
                     apiResult.Msg = "水電報表仍有該用戶，無法修改名稱。";
                 }
                 Logger.LogError("【" + controllerName + "/" + actionName + "】" + exception.Message);
@@ -170,6 +172,7 @@ namespace FrontendWebApi.ApiControllers
                 apiResult.Msg = "刪除用戶失敗。";
                 if (exception.Message.Contains($"a foreign key constraint"))
                 {
+                    apiResult.Code = "0001";
                     apiResult.Msg = "水電報表仍有該用戶，無法刪除。";
                 }
                 Logger.LogError("【" + controllerName + "/" + actionName + "】" + exception.Message);
@@ -250,13 +253,13 @@ namespace FrontendWebApi.ApiControllers
                 }
                 if (start_timestamp == "")
                 {
-                    apiResult.Code = "9999";
+                    apiResult.Code = "0001";
                     apiResult.Msg = "請選擇起始日期。";
                     return apiResult;
                 }
                 if (end_timestamp == "")
                 {
-                    apiResult.Code = "9999";
+                    apiResult.Code = "0001";
                     apiResult.Msg = "請選擇結束日期。";
                     return apiResult;
                 }
@@ -300,7 +303,7 @@ namespace FrontendWebApi.ApiControllers
                     //    $"updated_at = '{updated_at}', " +
                     //    $"tenant_guid = '{tb.tenant_guid}' " +
                     //    $"WHERE device_number = '{tb.device_number}'";
-                    apiResult.Code = "9999";
+                    apiResult.Code = "0001";
                     apiResult.Msg = "請選擇同一個月份";
                     return apiResult;
                 }