Remote Function Call: Difference between revisions

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{{about|the SAP technology|generic term|remote procedure call}}

{{unreferencedprimary sources|date=AugustMay 20142016}}

{{refimprove|date=August 2015}}

'''Remote Function Call''' is thea proprietary [[SAP SE]] interface. forRemote communicationFunction betweenCall a(RFC) is the standard SAP Systeminterface andfor othercommunication between SAP orsystems. third-partyThe compatibleRFC systemcalls overa [[TCP/IP]]function orto [[be Commonexecuted Programmingin Interfacea -remote Communicationssystem.<ref>[https://help.sap.com/saphelp_nw70/helpdata/en/6f/1bd5b6a85b11d6b28500508b5d5211/frameset.htm |CPI-C]]RFC connections.documentation by SAP]</ref> Remote function calls may be associated with [[SAP AG|SAP]] software and [[ABAP]] programming and provide a way for an external program (written in languages such as [[PHP]], [[Active Server Pages|ASP]], [[Java (Sun)|Java]], or [[C programming language|C]], or [[C++]]) to use data returned from the server. Data transactions arecan not limited to gettingget data from the server, butand can insert data into server records as well. SAP can act as the Client or Server in an RFC call.

==Technical overview==

A Remote Function Call (RFC) is the call or remote execution of a Remote Function Module in an external system.

In the [[SAP AGSAP_ERP|SAP]] system, these functions are provided by the RFC interface system. The RFC interface system enables function calls between two SAP systems, or between a SAP system and an external system.

There are 3 different versions of RFC communication:

# ''The first version of RFC is synchronous RFC (sRFC).''

# ''Transactional RFC (tRFC, also originally known as asynchronous RFC)''

# ''Queued RFC (qRFC)''

==RFC interfaces==

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*Calling interface for ABAP programs

*Each ABAP program can call a remote function module using the command CALL FUNCTION...DESTINATION. The parameter DESTINATION informs the SAP system that the called function module runs in a different system to the calling system. RFC communication with the remote system takes place as a part of the CALL FUNCTION command.

*RFC function modules in aan SAP system must be proper function modules and must be registered in the SAP system as remote.

*If the calling program and the called program are both ABAP programs, the RFC interface provides both communication partners. The calling program can be any ABAP program, and the called program must be a function module that is registered as remote.

*Interfaces for calling non-ABAP programs

If either the calling program or the called partner is not aan SAP program, it must be programmed in such a way that it can play the role of the other partner in RFC communication.

To implement RFC partner programs in non-SAP systems, read: Components of the SAP Communication Technology.

RFC-supported and GUI-supported interfaces can be used by external programs to call and execute function modules in SAP systems, and execute them in these systems. Likewise, ABAP programs can also use these interfaces to use functions supplied by external programs.

Functions are remote-enabled by setting the "Remote-enabled module"-flag in the Attributes tab of the ABAP Workbench: Function Builder (transaction SE37).

==SAPRFC==

SAPRFC is an [[Open-source software|open source]] program for [[UNIX|*NIX]] and [[Microsoft Windows|Windows]] systems that allows [[PHP]] to make calls to an RFC-enabled SAP R/3 system.

==See also==

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* [[SAP SE]]

* [[Oracle Call Interface]]

==References==

{{Reflist}}

==External links==

*[https://help.sap.com/saphelp_nw70/helpdata/en/6f/1bd5b6a85b11d6b28500508b5d5211/frameset.htm RFC definition by SAP]

*[https://forums.sdn.sap.com/forum.jspa?forumID=124 PHP Development Forums] in the [http://www.sdn.sap.com SAP Developer Network]

*[httphttps://saprfc.sourceforge.net/ SAPRFC Open Source Project]

*[https://www.opc-router.com/3-sap-systems_opc_ua_router_en/ Graphical RFC Connector]

[[Category:SAP AGSE]]

[[Category:Remote procedure call]]