Answer Posted / karan

There are four events in Module Pool

1:) PBO (Process Before Input)-> This event is used to do
some work before your screen displayed.For EXM , If you want
to activate any menu item on the screen etc...

2:) PAI (Process After Input)-> This event is used to do
some work after makin inputs on screen.For EXM , If user
press any button then after this what task should be done
and which screen should be called etc....

3:)POH (Process On Help Request)-> This event is used if you
want to provide any field help. This is activated on
pressing F1 button on any field on which you have provided POH.
You can Provide Help By:
PROCESS ON HELP-REQUEST.
FIELD field_name MODULE module_name.

3:)POV (Process On Value Request)-> This event is used if
you want to provide any input help. This is activated on
pressing F4 button.
You can Provide Help By:
PROCESS ON VALUE-REQUEST.
FIELD field_name MODULE module_name.

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