post
https://api.myregistry.com/MerchantApi/1/0/json/SetGiftAsPurchased
Mark a gift from a Registry as Purchased
When a visitor successfully makes a purchase of an item for a registrant, you want to mark that item as purchased so that duplicate purchases are not made. You can use the SetGiftAsPurchased end point to perform this action.
This APIs is designed for server-to-server communication only, attempting to call the APIs directly from JavaScript in a browser will fail.