Answer Posted / palash mazumder

IN PAI IF YOU WANT VALIDATE A GROUP OF FIELDS THEN CHAIN
ENDCHAIN BLOCK IS USED.

SYNTAX IS.
IN FLOW LOGIC

CHAIN.
FIELD NUM1.
FIELD NUM2.
MODULE USER_COMMAND_0100.
ENDCHAIN.

IN ABAP PROGRAM WRITE THE FOLLOWING CODE.
MODULE USER_COMMAND_0100 INPUT.
CLEAR okcode.
okcode = sy-ucomm.
CASE okcode.
WHEN 'ENTER' OR 'EXECUTE'.

IF NUM1 IS INITIAL OR NUM2 IS INITIAL .
MESSAGE e398(00) WITH 'PLEASE FILL THE FIELDS'. " Enter VALUES'
ELSE.
.....
ENDIF.
ENDIF.

ENDMODULE.

NUM1 AND NUM2 ARE INPUT FIELD NAME IN SCREEN 0100

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