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ABAP Code Snippet ARTICLE
No Transfer of sy-subrc The system field sy-subrc must not be used in ABAP Objects - and, since Release 7.0, also outside of classes - as an actual parameter for the output parameters of external procedures .
In ABAP Objects, the following statement causes an error message:
CALL FUNCTION func IMPORTING p = sy-subrc.
Correct syntax:
DATA subrc TYPE sy-subrc.
CALL FUNCTION func IMPORTING p = subrc.
Reason:
After parameter transfer, sy-subrc is set by the call statement. This overwrites the transferred value. With a few exceptions, system fields should never be overwritten explicitly in a program.
