AVS Only Transaction
An AVS Only transaction is a variation of an Authorization transaction that uses the Address Verification System to enable you to verify that a customer supplied address matches the billing address associated with the card. To submit an AVS Only transaction, submit an Authorization transaction with the <amount>
element set to 000 and the optional billToAddress
element with appropriate child values.
To obtain better interchange rates, you should always perform an AVS check either as a standalone transaction, or as part of the Authorization/Sale transaction.