What is the difference between At selection screen and At
selection screen on output?
Answer Posted / sagi.nagamani
AT SELECTION SCREEN : TO VALIDATE ALL FIELDS.whenever user
presses enter this event is triggered.if there is any
error,system redisplays the screen by enabling all fields.
AT SELECTION SCREEN ON : to validate a specified field.
whenever user presses enter this event is triggerd.if there
is any error,system redisplays the screen by enabling only
that particular field & disables all the fields.
AT SELECTION SCREEN OUTPUT : THIS EVENT IS TRIGGERED BEFORE
SELECTION SCREEN APPEARS.here u can perform user defined
actions like making fields mandatory,hide like that.
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