Patent ID: 9292850
Filing Date: 2016-03-22
CPC Classification: G06Q

Claim Text:
1. A method for processing a transaction, comprising: receiving, by a server computer, an authorization request message comprising an account number from an access device at a merchant; identifying, by the server computer, an issuer identifier from the account number; sending, by the server computer, the authorization request message to an issuer computer using the issuer identifier; associating, by the server computer, a unique transaction identifier with the transaction through a lookup table comprising a reference identifier, wherein the reference identifier is associated with the unique transaction identifier in the lookup table; receiving, by the server computer, an authorization response message comprising the account number from the issuer computer after the issuer computer authorizes the transaction; adding, by the server computer, the unique transaction identifier to the authorization response message and removing the account number from the authorization response message; and sending, by the server computer, the authorization response message including the unique transaction identifier to the access device at the merchant to complete authorization of the transaction, wherein the merchant stores the unique transaction identifier instead of the account number.