Hi!
Application enhancements allow customers to enhance their
application functions. Cutomer exits are preplanned by SAP and generally consist of several components.
The SAP application programmer creates SAP enhancements from function module exits, menu exits and screen exits. For this Tcode SMOD is provided.
Customers are given a catalog containing an overview of existing SAP enhancements. They can then combine the SAP enhancements they want into an enhancement project using transaction CMOD.
SAP enhancements are made up of components parts. These components include function module exits, menu exits and screen exits. A specific component may be used only once in single SAP enhancement.
Customer enhancement projects consist of SAP enhancements. Each SAP enhancement may be used only once in a single customer ehancement program.
FUNCTION MODULE EXIT :- This allow customers to implement additional logic in application functions. SAP application programmers define where function module exits are inserted and what kind of data they transfer.
MENU EXIT :- This alllow you to attach your own functions to menu options in SAP menus.
SCREEN EXITS :- This allow you to make use of reserved sections of a main screen(subscreen areas). You can either display additional information in these areas or input data. You define the necessary input and output fields on a customer screen
Regards
Abhijeet
Bluesky
