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R/3 ENHANCEMENT concept allows us to add our functionality
to SAP's standard business applications WITHOUT HAVING TO
MODIFY the original applications.
SAP creates enhancements for specific PROGRAMS, SCREENS AND
MENUS within standard R/3 applications. These enhancements
do not contain any functionality, instead act as HOOKS
WHERE WE can HANG our own ADD-ON functionality onto these
hooks.
Advantages with Enhancements:
1.> They do not affect standard SAP source code.
2.> They do not affect software updates.
NOTE: Customer enhancements may not be available for all
programs and screens found in SAP system. YOU CAN ONLY USE
CUSTOMER EXITS IF THEY ALREADY EXISTS IN THE SAP SYSTEM.
Enhancement Approaches:
1.>Procedural approach using Function Modules and are
called as Customer Exits .
2.>Object Oriented approach using Classes & Methods & are
called BADI's.
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