As noted above under “Transaction Reversal”, the ‘Reverse’ endpoint is mandatory for all implementations.

Use this endpoint to Undo a transaction that has already been completed, either on a plastic card or a virtual card.

The key piece of information required to reverse a transaction is the authCode, with is a unique identifier of the transaction to be reversed.

More information including details of the request/response elements as well as examples are provided in the ‘API’ section of this site.