Using referral lists to block transactions

The Risk Management page in the Merchant Interface enables you to add details (IP addresses, email addresses, cardholder names) to referral lists, which act as negative databases. The details you add to referral lists are then checked against a shopper's order and payment details when a payment attempt is made from your website. If a match is found, payment processing is stopped before the authorisation request is made to the card issuer.

Three referral lists are provided in the Risk Management page:

Each referral list has an edit page which enables you to add or remove a block.

For details about adding/deleting an entry to a referral list, see the Risk Management Page - Purpose and Use section.