When registering a product with the API, an error "The item with the same option and option value as an item exists in duplicate" occurs. 1. Please check if there is no duplicate itemName value for each option in the product creation JSON text. 2. Check if the attributeTypeName and attributeValueName values are entered in the attribute array so that they are not duplicated. Related articles [Instant Discount Coupon] Deletion Product Creation Query return withdrawal history by receiptID The error 'duplicated item name exists' occurs when modifying the product with API. Product approval was rejected due to a failure to download a representative or other image.