diff --git a/src/modules/item-related/item/infrastructure/dto/item.dto.ts b/src/modules/item-related/item/infrastructure/dto/item.dto.ts
index 0ac5660..b2169b6 100644
--- a/src/modules/item-related/item/infrastructure/dto/item.dto.ts
+++ b/src/modules/item-related/item/infrastructure/dto/item.dto.ts
@@ -66,7 +66,11 @@ export class ItemDto extends BaseStatusDto implements ItemEntity {
     example: 50,
   })
   @IsNumber()
-  @ValidateIf((body) => body.item_type.toLowerCase() != ItemType.FREE_GIFT)
+  @ValidateIf(
+    (body) =>
+      body.item_type.toLowerCase() != ItemType.FREE_GIFT ||
+      body.item_type != ItemType.BUNDLING,
+  )
   sales_margin: number;
 
   @ApiProperty({