Remote Function Call

[HARI PRASAD]

Fundamentals of RFC (Remote Function Calls)
Fundamentals of RFC

Communication between applications of different systems in the SAP
environment includes connections between SAP systems as well as
between SAP systems and non-SAP systems. Remote Function Call (RFC) is
the standard SAP interface for communication between SAP systems. The
RFC calls a function to be executed in a remote system. You can also
call a function module in the same system as an RFC; however, RFCs are
usually used when the calling and called function modules are running
in different systems.

In the SAP system, the RFC interface system provides this function.
The RFC interface system allows function calls between two SAP systems
or between an SAP system and an external (non-SAP) system.
RFC is an SAP interface protocol that is based on the Common
Programming Interface for Communication (CPI-C) and allows cross-host
communication between programs. This means that ABAP functions can be
called from external applications and tools, and that external
applications can be called from the SAP system.

RFC means that the ABAP programmer does not have to write his or her
own communication routines. For an RFC call, the RFC interface
Converts all parameter data to the format required in the remote
system calls the communication routines that are required to
communicate with the remote system handles errors that occur during
the communication.