Patent attributes
Embodiments of the invention are directed to methods, apparatuses, computer readable media and systems for processing transactions using conversion or filtering of restricted information. One embodiment of the invention is directed to a method comprising receiving, at a server computer located outside a restricted zone, a transaction request message including an unrestricted account alias, wherein the unrestricted account alias was previously converted from a restricted account identifier into the unrestricted account alias by a server computer located in a restricted zone. The server computer located outside the restricted zone may determine an account associated with the unrestricted account alias and process the transaction request message. Similar methods may be applied to settlement files including an unrestricted account alias that is converted to a restricted account identifier. Other embodiments are directed to filtering restricted information from service requests or other transactions.