I have an assignment to add some custom controls to the screen 1600 of the program SAPLE20C in the transaction ES31. I checked the available exits and badis for the transaction but didn't find anything appropriate. The exits from XES30 ( EXIT_SAPLES30_001 - EXIT_SAPLES30_011) seem to be the closest to what i need but they seem to not be triggered during the transaction. Is there any other exit or badi i can use to check the user inputs on the mentioned screen or even a screen exit to add some custom new fields?
I will be thankful for any help.