The only credit card verification for the System i that I have seen was
developed for Oracle's JD Edwards ERP.
After real-time validation of credit card purchases, the order is added
to JD Edwards sales order files F4201 and F4211. Contact the people at:
ERP2Web from CDI is a suite of .NET Framework and XML based ecommerce
solution that transforms your J.D. Edwards to a real-time
Business-to-Business (B2B) and Business-to-Consumer (B2C) Electronic
Storefront solution over the web. ERP2Web is easily and rapidly
configurable enabling you to extend eCommerce and Self Service web
functionality quickly without making any changes to your existing JD
Edwards (JDE) World and EnterpriseOne (E1) application.