Debugging user exit of transaction F110

Hi all,

I am using transaction F110 to make a payment run; and the IDoc of type PEXR2003 is getting generated.

Now I want to populate fiew fields in segment E1IDB02 by using exit. But while debugging I found that the breakpoints I had set were not hit.

I know there are there are quite a few threads on this topic and I have gone throgh them, but it didn't solve my purpose.

Hence, I posted this new thread.

P.S. I am already debugging in update mode and also, I debugged the job which was sheduled through SM37. But still the breakpoint was not hit.

Because of this, I am not able decide which exit to be used in my case.

Any help will be greatly appreciated!

-Supriya.