I'm working on a NodeJS server to log transactions. Did you get it working, and could you share a request handler of how to decode the message?

Hi, we are having the same problem. Did you find a solution?

You can pass appAccountToken in the purchase options (1). That should be included when the server receives the transaction (2). https://developer.apple.com/documentation/storekit/product/3791971-purchase https://developer.apple.com/documentation/appstoreservernotifications/appaccounttoken