When a webhook notification is recieved there is no way to trace it back to a customer/event/action.
In the case of hosted forms (i.e. Accept Hosted), none of the values (e.g. invoice number) submitted in the request for a form validation token appear in the webhook notification, so there is no way to immediately know what the webhook notification is in regards to.
This forces us to always query authorize.net for the transaction details to see what the transaction applies to (e.g. invoice number) and confirm the transaction is completed.
I imagine that a webhook notification alone is not especially useful unless it provides access to a correlation token and status. Because these values are small in size and almost definitely required by any merchant software, I feel the very small increase in payload could greatly reduce the need for subsequent queries - saving merchants as well as Authorize.net a lot of extra processing and network traffic.
