Transaction Error: No Card Record

What does 'No Card Record' mean?

This means that the card number the customer filled in on the checkout form is not on file with the card-issuing bank (their bank). It could also mean that they filled in the wrong card number or expiry date.

What can I do about it?

They will need to retry the transaction with correct card details or escalate to their bank for further assistance if retrying the payment doesn't work.