A store within an instance uses either standard order or advanced order processing. Multiple stores can exist within an instance. Therefore, an instance can have any combination of standard or advanced orders.
Orders that are processed through standard order processing use legacy payment and refund methods. They are not routed through the event-driven payments subcomponent. Payments for these orders are not and cannot be processed as event-driven payments.
Orders that are processed as advanced orders use event-driven payment processing and its supported payment methods.
A store set up for standard order processing can be migrated to an advanced order store. An advanced orders store cannot be converted back to a standard order store. For more information about migrating to advanced orders, see the WebSphere Commerce Migration Guide for your platform.