diff --git a/app/Http/Requests/ItemMaster/ItemPageStoreRequest.php b/app/Http/Requests/ItemMaster/ItemPageStoreRequest.php
index 38f8c564..3c580eff 100644
--- a/app/Http/Requests/ItemMaster/ItemPageStoreRequest.php
+++ b/app/Http/Requests/ItemMaster/ItemPageStoreRequest.php
@@ -2,7 +2,9 @@
 
 namespace App\Http\Requests\ItemMaster;
 
+use App\Models\ItemMaster\ItemPage;
 use Illuminate\Foundation\Http\FormRequest;
+use Illuminate\Validation\Rule;
 
 class ItemPageStoreRequest extends FormRequest
 {
@@ -13,10 +15,26 @@ public function authorize(): bool
 
     public function rules(): array
     {
+        $tenantId = app('tenant_id');
+
         return [
             'page_name' => 'required|string|max:255',
-            'item_type' => 'required|in:FG,PT,SM,RM,CS',
+            'item_type' => [
+                'required',
+                'in:FG,PT,SM,RM,CS',
+                Rule::unique((new ItemPage)->getTable(), 'item_type')
+                    ->where('tenant_id', $tenantId)
+                    ->where('is_active', true)
+                    ->whereNull('deleted_at'),
+            ],
             'absolute_path' => 'nullable|string|max:500',
         ];
     }
+
+    public function messages(): array
+    {
+        return [
+            'item_type.unique' => __('error.item_page_duplicate_item_type'),
+        ];
+    }
 }
diff --git a/app/Services/ItemMaster/ItemPageService.php b/app/Services/ItemMaster/ItemPageService.php
index db9ed7ff..6d6a26b4 100644
--- a/app/Services/ItemMaster/ItemPageService.php
+++ b/app/Services/ItemMaster/ItemPageService.php
@@ -45,6 +45,16 @@ public function store(array $data): ItemPage
         $userId = $this->apiUserId();
         $itemType = strtoupper($data['item_type']);
 
+        // 동일 tenant_id + item_type 조합의 활성 페이지 중복 검증
+        $exists = ItemPage::where('tenant_id', $tenantId)
+            ->where('item_type', $itemType)
+            ->where('is_active', true)
+            ->exists();
+
+        if ($exists) {
+            throw new BusinessException(__('error.item_page_duplicate_item_type'));
+        }
+
         // item_type으로 common_codes에서 source_table 조회
         $sourceTable = $this->getSourceTableFromCommonCode($itemType);
 
diff --git a/lang/en/error.php b/lang/en/error.php
index 01aa5b42..2bf0693f 100644
--- a/lang/en/error.php
+++ b/lang/en/error.php
@@ -83,6 +83,7 @@
     'code_exists_in_deleted' => 'The same code exists in deleted data. Please permanently delete that code first or use a different code.',
 
     // Item type validation
+    'item_page_duplicate_item_type' => 'A page with the same item type already exists.',
     'item_type_required' => 'Item type (item_type) is required.',
     'item_type_or_group_required' => 'Item type (item_type) or group ID (group_id) is required.',
     'invalid_item_type' => 'Invalid item type.',
diff --git a/lang/ko/error.php b/lang/ko/error.php
index e5ef71c2..c3d14699 100644
--- a/lang/ko/error.php
+++ b/lang/ko/error.php
@@ -148,6 +148,7 @@
     'field_key_system_readonly' => '시스템 필드의 field_key는 변경할 수 없습니다.',
     'field_key_system_cannot_delete' => '시스템 필드는 삭제할 수 없습니다.',
     'bom_not_found' => 'BOM 항목을 찾을 수 없습니다.',
+    'item_page_duplicate_item_type' => '이미 동일한 품목 유형의 페이지가 존재합니다.',
     'item_type_required' => '품목 유형(item_type)은 필수입니다.',
     'item_type_or_group_required' => '품목 유형(item_type) 또는 그룹 ID(group_id)는 필수입니다.',
     'invalid_item_type' => '유효하지 않은 품목 유형입니다.',