diff --git a/app/Http/Controllers/BendingBaseController.php b/app/Http/Controllers/BendingBaseController.php
index 1ccf7278..457e9ccd 100644
--- a/app/Http/Controllers/BendingBaseController.php
+++ b/app/Http/Controllers/BendingBaseController.php
@@ -168,6 +168,7 @@ public function store(Request $request)
     public function update(Request $request, int $id)
     {
         $validated = $request->validate([
+            'code' => 'required|string|max:20',
             'name' => 'required|string|max:200',
             'item_sep' => 'required|in:스크린,철재',
             'item_bending' => 'required|string|max:50',
@@ -188,7 +189,13 @@ public function update(Request $request, int $id)
         $response = $this->api()->put("/api/v1/bending-items/{$id}", $data);
 
         if (! $response->successful()) {
-            return back()->withErrors(['api' => $response->json('message', 'API 오류')])->withInput();
+            $body = $response->json();
+            $errorBag = ['api' => $body['message'] ?? 'API 오류'];
+            foreach ($body['errors'] ?? [] as $field => $msgs) {
+                $errorBag[$field] = is_array($msgs) ? implode(', ', $msgs) : $msgs;
+            }
+
+            return back()->withErrors($errorBag)->withInput();
         }
 
         $this->handleImageUpload($request, $id);
diff --git a/resources/views/bending/base/form.blade.php b/resources/views/bending/base/form.blade.php
index 96783c74..2e05ac53 100644
--- a/resources/views/bending/base/form.blade.php
+++ b/resources/views/bending/base/form.blade.php
@@ -92,10 +92,14 @@
                                     @endforeach
                                 </select>
                                 <p class="text-xs text-gray-400 mt-0.5">순번은 저장 시 자동 채번</p>
-                            @else
-                                {{-- 수정/조회: 코드 읽기전용 --}}
+                            @elseif($isView)
+                                {{-- 조회: 읽기전용 --}}
                                 <input type="text" value="{{ $itemCode }}" disabled
                                        class="w-full border border-gray-300 rounded px-3 py-1.5 text-sm bg-gray-100 font-mono">
+                            @else
+                                {{-- 수정: 편집 가능 (중복 검사 포함) --}}
+                                <input type="text" name="code" value="{{ old('code', $itemCode) }}" required
+                                       class="w-full border border-gray-300 rounded px-3 py-1.5 text-sm font-mono">
                             @endif
                         </div>
                         <div>