Hi,
let me explain with an example.
you are in need to check a material whether it is been marked for deletion or not before creating a purchase order.If it was marked then you need to display an info message.
First what you need to do is:
Go to me21n then click on system--->status.
There you could find the standard program associated to that.
So now we found the program associated to that.Find the package associated to that program by looking into program attributes.
Then go to se84 and there you could find a drop down where you can see enhancements also in that give the package name and execute.
You will find all the user exits associated to that package.
Then from the description itself you could make out which exit will be helpful to you.
Then go to SMOD and see if a project was not created then go to CMOD and create a project, then you can see the scrren exit, menu exit associated to that.
Then you will be allowed to add the code in that include.
Thats all your requirement is done.
Thanks,
Dinesh.
To find a standard program