I know I can do a full order cancellation via the v2 cancellation request. But I can't sort out how to cancel a single item of a multi-item order. The docs say I should call AddDispute to cancel a single item, but that doesn't appear to do anything, nor refund for the item. There also doesn't seem to be anyway to send a partial refund via eBay. I'm trying to avoid having to also deal with Paypal's API since a full cancellation works just fine. Am I missing something? Just trying to sort out how to cancel and/or refund a single item of a multi-item order on eBay. Thanks.
Then what does it mean when the docs for AddDispute say that it "Enables a seller to create an Unpaid Item case against a buyer, or to cancel a single line item order". I'm just curious what it actually does since calling it on a single line item in a order doesn't appear to do anything at all.