eBay Trading API
Call Reference Version 585

A catalog product identifies a prototype description of a well-known type of item, such as a popular book. As this call supports batch requests, you can pass in an array of products to retrieve data for several products at the same time.

Specifies the context in which the call is being executed, which will imply certain validation rules. Use this property to make sure you retrieve the appropriate version of product information and attribute meta-data when you are listing, revising, or relisting an item with Pre-filled Item Information. Valid values:
SYI = Sell Your Item. Use before adding an item. Causes the response to include the latest product ID in the system (given an ID specified in the Products element) and the corresponding characteristic meta-data.
RYI = Revise Your Item. Use this before revising an item. Causes the response to return the product ID, attribute data, and other data associated with the version of the product that you pass in the Products element. This is useful in case the product ID or associated data has changed in the system since the item was originally listed. When revising an item, this helps you make changes that are consistent with the original listing.
RELIST = Use this before relisting an item. Causes the response to include the latest product ID in the system (given an ID specified in the Products element) and the corresponding characteristic meta-data. (Same as SYI).