VERIFYING DYNAMIC TRANSACTION SECURITY CODE IN PAYMENT CARD SYSTEM

摘要

A method includes receiving an authorization request for a purchase transaction. The method further includes determining (a) whether the purchase transaction is eligible for security code checking based on whether an account number included in the authorization request is in an eligible account number range, and (b) whether a transaction security code included in the authorization request is valid. The method also includes relaying the authorization request to an issuer financial institution with an indication as to whether the transaction security code is valid. Alternatively, the method may include declining the transaction when the security code is found to be invalid, and sending an advice message to the issuer regarding the declined transaction. In this alternative, the authorization request is relayed to the issuer only if the security code is found to be valid.