diff --git a/app/Http/Controllers/Api/V1/BendingController.php b/app/Http/Controllers/Api/V1/BendingController.php
index 7f03fa49..9c92750f 100644
--- a/app/Http/Controllers/Api/V1/BendingController.php
+++ b/app/Http/Controllers/Api/V1/BendingController.php
@@ -39,12 +39,20 @@ public function resolveItem(Request $request): JsonResponse
                 return ['error' => 'MISSING_PARAMS', 'code' => 400, 'message' => 'prod, spec, length 파라미터가 필요합니다.'];
             }
 
+            $expectedCode = "BD-{$prodCode}{$specCode}-{$lengthCode}";
             $item = $this->service->resolveItem($prodCode, $specCode, $lengthCode);
 
             if (! $item) {
-                return ['error' => 'NOT_MAPPED', 'code' => 404, 'message' => '해당 조합에 매핑된 품목이 없습니다.'];
+                return [
+                    'error' => 'NOT_MAPPED',
+                    'code' => 404,
+                    'message' => '해당 조합에 매핑된 품목이 없습니다.',
+                    'expected_code' => $expectedCode,
+                ];
             }
 
+            $item['expected_code'] = $expectedCode;
+
             return $item;
         }, __('message.fetched'));
     }