I know we can use RFC for communicating from external system to R3 or from R3 to external system, I have a question on the exception handling done.
If we are communicating from R3 to external system, we would use as
CALL FUNCTION FM NAME DESTINATION DEST NAME
exceptions and based on the sy-subrc value the exception is caught
and if we are calling from external system how are the exceptions handled I had gone through the links below