diff --git a/backend/app/Controller/api/v1/DataScopeController.php b/backend/app/Controller/api/v1/DataScopeController.php
index ac90695..b845930 100644
--- a/backend/app/Controller/api/v1/DataScopeController.php
+++ b/backend/app/Controller/api/v1/DataScopeController.php
@@ -266,6 +266,7 @@ class DataScopeController extends AbstractController
                 'company' => $company_ids[] = $scope['scope_id'],
                 'platform' => $platform_ids[] = $scope['scope_id'],
                 'store' => $store_ids[] = $scope['scope_id'],
+                default => null,
             };
         }
 
@@ -286,6 +287,7 @@ class DataScopeController extends AbstractController
                 'company' => $company_names[$scope['scope_id']] ?? null,
                 'platform' => isset($platform_names[$scope['scope_id']]) ? "Platform #{$scope['scope_id']}" : null,
                 'store' => $store_names[$scope['scope_id']] ?? null,
+                default => null,
             };
 
             return [
diff --git a/backend/app/Controller/api/v1/RoleController.php b/backend/app/Controller/api/v1/RoleController.php
index f566f01..b73ef4c 100644
--- a/backend/app/Controller/api/v1/RoleController.php
+++ b/backend/app/Controller/api/v1/RoleController.php
@@ -10,6 +10,7 @@ use App\Middleware\PermissionMiddleware;
 use App\Model\Role;
 use App\Model\RoleRouteOverride;
 use App\Model\Route;
+use App\Model\RouteGroup;
 use App\Model\User;
 use App\Service\ScopeTableManager;
 use Hyperf\DbConnection\Db;
@@ -313,6 +314,17 @@ class RoleController extends AbstractController
         $group_ids = array_map('intval', $group_ids);
         $group_ids = array_unique($group_ids);
 
+        // 校验 group_ids 都存在
+        if (!empty($group_ids)) {
+            $existing_count = RouteGroup::query()->whereIn('id', $group_ids)->count();
+            if ($existing_count !== count($group_ids)) {
+                return $this->response->json([
+                    'code' => 400,
+                    'message' => '包含不存在的 group_id',
+                ])->withStatus(400);
+            }
+        }
+
         // 使用 sync 全量替换
         $role->routeGroups()->sync($group_ids);
 
diff --git a/backend/app/Controller/api/v1/RouteGroupController.php b/backend/app/Controller/api/v1/RouteGroupController.php
index 6e75696..bf18cae 100644
--- a/backend/app/Controller/api/v1/RouteGroupController.php
+++ b/backend/app/Controller/api/v1/RouteGroupController.php
@@ -45,7 +45,6 @@ class RouteGroupController extends AbstractController
                         new OA\Property(property: 'sort_order', type: 'integer', example: 0),
                         new OA\Property(property: 'routes_count', type: 'integer', example: 5),
                         new OA\Property(property: 'created_at', type: 'string', format: 'date-time'),
-                        new OA\Property(property: 'updated_at', type: 'string', format: 'date-time'),
                     ])),
                 ])
             ),
@@ -104,7 +103,6 @@ class RouteGroupController extends AbstractController
                         new OA\Property(property: 'description', type: 'string', nullable: true),
                         new OA\Property(property: 'sort_order', type: 'integer', example: 0),
                         new OA\Property(property: 'created_at', type: 'string', format: 'date-time'),
-                        new OA\Property(property: 'updated_at', type: 'string', format: 'date-time'),
                     ], type: 'object'),
                 ])
             ),
@@ -227,7 +225,6 @@ class RouteGroupController extends AbstractController
                         new OA\Property(property: 'description', type: 'string', nullable: true),
                         new OA\Property(property: 'sort_order', type: 'integer', example: 0),
                         new OA\Property(property: 'created_at', type: 'string', format: 'date-time'),
-                        new OA\Property(property: 'updated_at', type: 'string', format: 'date-time'),
                     ], type: 'object'),
                 ])
             ),
@@ -401,8 +398,6 @@ class RouteGroupController extends AbstractController
                         new OA\Property(property: 'method', type: 'string', example: 'GET'),
                         new OA\Property(property: 'path', type: 'string', example: '/api/v1/users'),
                         new OA\Property(property: 'group_id', type: 'integer', nullable: true, example: 1),
-                        new OA\Property(property: 'created_at', type: 'string', format: 'date-time'),
-                        new OA\Property(property: 'updated_at', type: 'string', format: 'date-time'),
                         new OA\Property(property: 'group', nullable: true, properties: [
                             new OA\Property(property: 'id', type: 'integer', example: 1),
                             new OA\Property(property: 'name', type: 'string', example: 'user-management'),
@@ -490,8 +485,6 @@ class RouteGroupController extends AbstractController
                         new OA\Property(property: 'method', type: 'string', example: 'GET'),
                         new OA\Property(property: 'path', type: 'string', example: '/api/v1/users'),
                         new OA\Property(property: 'group_id', type: 'integer', nullable: true, example: 1),
-                        new OA\Property(property: 'created_at', type: 'string', format: 'date-time'),
-                        new OA\Property(property: 'updated_at', type: 'string', format: 'date-time'),
                         new OA\Property(property: 'group', nullable: true, properties: [
                             new OA\Property(property: 'id', type: 'integer', example: 1),
                             new OA\Property(property: 'name', type: 'string', example: 'user-management'),