What if eProcessingNetwork is not on the third-party cars list of payment gateways?
If your third party cart offers Authorize.Net TM eProcessingNetwork also offers emulation of Authorize.Net TM. This makes it easy for developers who have already integrated Authorize.NetTM to utilize eProcessingNetwork Transaction Processing Services. Typically all a developer has to do is change the URL they access from https://secure.authorize.net/gateway/transact.dll to https://www.eProcessingNetwork.Com/cgi-bin/an/order.pl. Pass in the merchants’ eProcessingNetwork Account Number as the x_login. Additional details about the Authorize.NetTM emulator offered by eProcessingNetwork are available here.