user exit

User Exit That Is Applied In MM Area Give me some examples of user exit that is applied in MM area in a real time scenario.

1. User exits can be found out using a development class or a package.  2. For which transaction you would like know whether user exit is available or not. example 1. Whenever I create a purchase order my vendor is same for a particular purchasing group and a particular purchasing organization .

Procedure to find out the user exit : 3.For which transaction you would like to see the user exits, frrst goto transaction and click system status and find out the technical name i.e is package. 4. By going to the SMOD transaction give package name and find out the real user exits available or not.  Once it is available go to edit attributes and write program by givng the filed name = '9999' (some vendor) and save , click, save, activte. 5. Go top CMOD  transaction and give that user exit in the filed area and activate . 6. Go and observe in me21 and see that 9999 vendor by default will come when ever you will create po.