STOP :This statement terminates a processing block in an executable  program.
The statement is only intended for use in the INITIALIZATION, AT SELECTION-SCREEN, START-OF-SELECTION, and GET events. It  terminates the current processing block in an executable  program and triggers the END-OF-SELECTION event. In all other
processing blocks, or when you do not want to trigger the  END-OF-SELECTION event, you must use EXIT.
EXIT.
- Within a loop structure:
Terminates loop processing (DO, WHILE, LOOP, SELECT).
- Within subroutines and other modularization units (but not  in a loop structure):
Leaves the subroutine or modularization unit (FORM, MODULE,  FUNCTION, TOP-OF-PAGE, END-OF-PAGE).
- Outside loop structures and modularization units (report  processing):