Using blacklist tokens

Building up a set of blacklisted cards (using blacklist tokens) can help you avoid fraud and financial losses.

To verify a card against your database of blacklisted cards

  1. Create a payment request. If the payment request succeeds, a unique <BlacklistToken> value is returned.
  2. Verify the blacklist token against your database, and if there is a match, release or refund the payment.

Alternatively, you can use the verify order page (callback_verify_order) to verify the blacklist token. If the credit card is blacklisted, you can abort the transaction. For information about setting up the verify order page, see Payment Verify Order Page (callback_verify_order).

The difference between a blacklist token and a credit card token is that the blacklist token only represent the card number, whereas the credit card token represents both the card number and the expiry date.

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