RFC Programming in ABAP SAP AG
4 April 2001
Contents
RFC Programming in ABAP...............................................................................5
RFC Basics..................................................................................................................................... 6
The RFC Interface.......................................................................................................................... 7
RFC in SAP Systems..................................................................................................................... 8
Technical Requirements............................................................................................................. 11
Calling Remote Function Modules in ABAP............................................................................. 13
Introduction.................................................................................................................................. 14
Parameter Handling in Remote Calls ........................................................................................ 16
Calling Remote Functions Locally............................................................................................. 17
Calling Remote Functions BACK............................................................................................... 18
Using Transactional Remote Function Calls............................................................................ 19
Transactional Integrity of tRFCs............................................................................................... 22
qRFC With Send Queue .............................................................................................................. 24
qRFC With Send Queue: Overview ......................................................................................... 26
Programming Serialization .......................................................................................................28
Using ........................................................................................................................................ 30
Transaction Sequence and Queue Assignment ...................................................................... 32
Tools......................................................................................................................................... 35
Using Asynchronous Remote Function Calls .......................................................................... 38
Calling Requirements for Asynchronous RFCs ....................................................................... 40
Receiving Results from an Asynchronous RFC....................................................................... 41
Keeping the Remote Context ................................................................................................... 44
Parallel Processing with Asynchronous RFC........................................................................... 45
Checking Authorizations for RFC.............................................................................................. 48
Using Pre-Defined Exceptions for RFC..................................................................................... 49
Writing Remote Function Modules in ABAP ............................................................................ 50
Steps for Implementing Remote Function Modules ................................................................ 51
Programming Guidelines............................................................................................................ 52
Debugging Remote Function Modules ..................................................................................... 53
Maintaining Remote Destinations.............................................................................................. 54
Displaying, Maintaining and Testing Destinations .................................................................. 55
Entering Destination Parameters............................................................................................... 57
Types of Destinations ................................................................................................................. 59
Maintaining Group Destinations................................................................................................ 62
Maintaining Trust Relationships Between R/3 Systems ......................................................... 63
