During the execution of an RFC function, it is sometimes necessary and useful to call another RFC function in the original/source RFC client system to get some more data before continuing with the current RFC function. This functionality is called call-back and will use the same RFC connection established by the first RFC call request.
The following sections describe how to use and carry out this feature both in ABAP function modules and in external programs.
Call-Back from an ABAP Function Module
Call-Back from an RFC Server Program