Answer / santosh

You can validate your fields in the PAI module of the
program by placing them between the CHAIN & ENDCHAIN
Statement.

Answer / ashwin urkude

For single field validation write in PAI

FIELD FIELD-NAME MODULE MODULE_NAME.

Additions are: ON INPUT- whenever change in initial value takes place validation will be done

ON REQUEST : whenever value in that field is changed validation will tale place.

Answer / kerri

We can write code for field validation in the PAI and PBO events.

Answer / aditya panwar

WRITE THE L0OP SCREEN CODE AFTER THE PBO MODULE.

PROCESS BEFORE OUTPUT.

LOOP AT SCREEN.
IF SCREEN-NAME = 'FIELD_NAME'.
SCREEN-INPUT = '1'.
SCREEN-REQUIRED = '1'. "for mandatory
SCREEN-LENGHT = '10'. "for lenght
ENDIF.
MODIFY SCREEN.
ENDLOOP.

MODULE STATUS_1000.

PROCESS AFTER INPUT.
MODULE USER_COMMAND_1000.

Suppose there is a secondary index on 4 non-key fields A,B,C & D. There are 3 select queries :- a) one on basis of A, B, C , D b) Second on basis of A, B, C c) Third on basis of D, C,B, A In which all situations , the above secondary index will be used?

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