Answer / manu

The above code is right which was written by Raju, but this
code need to wtite within At-Selection screen event, bec.
we can validate input data within this event only.

Answer / raju

Hi Busha,

i want to check the field kunnr from kna1, then

parameter : pa_kunnr type kunnr. (This is input field)

select single kunnr into pa_kunnr
from kna1
where kunnr eq pa_kunr.

if sy-subrc ne o.
message i000(zexp). ( zexp is message class,
i message type
000 message number)
endif.

Answer / malli.gontla

just u use at selection screen on field event. it will
restrict the wrong values.
u can write the condition in that event

Answer / busha

can u give any example?

When to use logical database?

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