Combining Service Interfaces with Imported RFCs or IDocs 

If you want to exchange messages between the Integration Server and an older SAP system by using the RFC or IDoc adapter, proceed as follows:

       1.      Import the RFC or IDoc interface to the ES Repository (see: Importing IDocs or RFCs).

       2.      Create a service interface with the interface pattern Stateless or Stateless (XI 3.0-Compatible). The counterpart of an IDoc is always asynchronous, whereas RFCs can be asynchronous or synchronous. Assign the RFC or IDoc message to the operation by using the input help.

You can only reference messages of one object type from an operation. For example, it is not possible to enter a message type for the request message of a synchronous operation and an IDoc message for the response message of the same operation.

       3.      Generate a proxy for your service interface. The RFC or IDoc is already available in the application system and can exchange messages with the Integration Server by using the respective adapter.

The operation of the service interface and the RFC or IDoc reference the same message schema. Therefore, no mapping is required.