Merchant-Inititated Reversals

When you do not receive a response message after sending a PIN debit purchase or credit request, your request might have timed out. This feature enables you to reverse a timed-out transaction within 2 hours of the original request.
When using the merchant-initiated reversals feature, include the
clientReferenceInformation.transactionId
field in your original request for a PIN debit purchase. The value of the transaction ID must be unique for 60 days. It links your reversal request to your original request.