Hi Vijay Kumar,
User Exits
USER EXITS are FORMS and are called by SAP standard programs using PERFORM.
Inside the form (user exit) you can read and change almost any global data from host program.
User exits are more flexible because you have more information to use in your code but on the other hand , it is very easy to manipulate erroneously global data and lead the standard program to a dump or even to make database inconsistent.
User-exit doesn’t have any classification.
Basically designed For SD module
User-exits can be written only using access-key
With user-exits the code , the developer has written will not be there for next version unless modification assistance tool is used
Customer Exits
CUSTOMER EXITS are FUNCTIONS so they are called using CALLFUNCTION (or more exactly CALL CUSTOMER FUNCTION).
Inside a function (customer exit) you can only acces your
import/export/changing/tables parameters.
Customer exits are more restrictive but you are sure any
change you can make to any parameters will never lead to
inconsistency
In customer-exit we have function-module exit,screen exit, menu exit.
Costomer exits Are available for MM,SD,FI,HR Basically
designed for all modules.
Reward points if useful.
Cheers,
Swamy Kunche
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