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.