Optionalfail_Indicate error type if one element hit error.
Optionalfail_Indicate error details if one element hit error.
Optionalitem_Shopee's unique identifier for an item.
Optionalmodel_Shopee's unique identifier for a variation of an item. If there is no variation of this item, you don't need to input this param. Dafault is 0.
AddDiscountItemError sub-interface for AddDiscountItemResponseData