I wanted to know abt user exit.
I want the step by step procedure of using user exit.
The R/3 enhancement concept allows you to add your own functionality to SAPu2019s standard business applications without having to modify the original applications.
SAP creates menu exits by defining special menu items in the Menu Painter. These special entries have function codes that begin with "+" (a plus sign). You specify the menu itemu2019s text when activating the item in an add-on project.
Screen exits add fields to screens in R/3 applications. SAP creates screen exits by placing special subscreen areas on a standard R/3 screen and calling a customer subscreen from the standard screenu2019s flow logic.
Field exits allow you to create your own programming logic for any data element in the Dictionary. You can use this logic to carry out checks, conversions, or business-related processing for any screen field. Example: The data element BBBNR identifies a companyu2019s international location number. You might want to set up your R/3 System so that all international location numbers are larger than 100.
Reward points are always welcome.
Also t code for user exit is SE80 and SE81. And you can use CMOD and SMODE function.
wht info u have given is very help ful.
I got lot of from the same.
still can u give me step by step configuration with any example so i will be able to understand better abt the same.