SAP ABAP MESSAGE RFC

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ARTICLE

Messages in RFC Processing
As long as no list or dialog processing takes place during the processing of a function module called up using the RFC interface, messages behave as follows:
Messages of types 'I', 'S', and 'W' are ignored.
Messages of types 'A', 'E', and 'X' cause processing to terminated, followed by a database rollback. In the calling program, the classic exception SYSTEM_FAILURE is raised.
If dialog processing or list processing takes place during RFC processing, any messages sent behave as described there.

Note
If a message of type 'E' is sent in a remote-enabled function module, note that it depends on the type of call whether a database rollback will occur or not. If the call does not take place using the RFC interface, a database rollback usually does not occur.