when are this three events fired and tell me whuich event
is fired first ,second and third --- at selection -
screen, at selection -screen output, and at selection-
screen on value request.

Answer Posted / vishal balapure

1) at seletion-screen output (when the screen is displayed
its same as PBO in module pool-- generally we use this
event for scenerio like filling the list box etc.)
2) at selection-screen (this event gets called when the
user presses enter or execute -- generally we use this
event to carry out validations)
3) at selection-screen on value request(this event will get
called only when the user presses F4 on a specific field on
the selection screen.)

Hope this answers your query...

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