OptionalchannelThe Amazon SmartConnect SKU of the channel.
OptionalcustomerThe marketplace-specific customer order ID.
OptionalexchangeThe Amazon SmartConnect ID of the exchange order.
OptionalmarketplaceOptionalmerchantThe ID of the merchant or seller to whom this return is created in the marketplace.
OptionalreturnThe Amazon SmartConnect ID of the location to which this return is created.
OptionalshipmentThe marketplace-specific shipment ID.
Marketplace channel-specific attributes for the return. These attributes are not mandatory and each channel can provide them differently.