getMultipleUnlistedItems

This calls is identical to getUnlistedItem with three exceptions:

• The request will be prefaced with getMultipleUnlistedItemsRequest and the output will be getMultipleUnlistedItemsResponse
• The itemId input can be an array of up to 50 items, rather than just an integer, as with getUnlistedItem
• The output for item will be an array of all the items that you requested that are currently available for sale