SAP LEAVE PROCESSING BLOCKS documentation, setup help and example usage

ARTICLE

Exiting Processing Blocks
Processing blocks can be implicitly exited by

normal exiting

or program-driven exiting, using these statements:

RETURN

EXIT

CHECK

STOP

CHECK SELECT-OPTIONS (obsolete, for logical databases only)

REJECT (obsolete, for logical databases only)

. The onward flow of the program depends on the type of processing block.
In addition to the statements described here, statements that call other units without returning to the caller after the call is made, also end their processing block. These include:

LEAVE [TO] SCREEN

LEAVE LIST-PROCESSING

LEAVE TO TRANSACTION

SUBMIT without AND RETURN

Messages and raised exceptions can also end processing blocks.
ABAP_PGL Only use RETURN to exit procedures

Note
Exiting a procedure by pressing RETURN (or EXIT or
CHECK ) is the error-free way to end the procedure. Formal parameters for which the pass by value is defined are not passed to the assigned actual parameters only if the procedure terminates after an error (if an exception is raised or a message is sent).