USER EXITS IN SAP ABAP.
There are four types of USER EXITS
Function Module exits
Screen exits
Menu exits
Fields exits
Function Module exits:
In this we will use FUNCTION MODULE, to enhance, SAP standard program.
Screen exits:
They are used to add extra FIELDS in SAP standard screens.
Menu exits:
It is used to add extra MENU ITEMS to SAP standard screens.
Field exits:
It is used to add extra VALIDATIONS to SAP standard screen fields
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