If you need to use the information contained in an IDoc in documents of another format, you build a service that "maps" the information from fields in the IDoc to the variables used by the other application. For example, to transfer a purchase order from an ORDERS02 IDoc to an EDI system, you create a flow service that maps information from the IDoc fields to fields within the EDI system's purchase-order document. Then, you define a routing notification that triggers this flow service.

The following instructions will show you how to do this in detail: