There is a case in my company, where some materials of a billing document aren't saved in COPA depending on it's Item Category. This box is not well documented and I have to look where this condition is located. I'm guessing is in one User Exit, but I can find it.
Any idea how to find it? I checked other user exit and their using this command to clean COPA: clear: xaccit-paobjnr, but the "Where-used list" is not working for this field
Any idea will be much appreciated.