I was wondering if there is an User Exit where I can put in code to grab information whenever a Person Number information is changed or a new Person Number is created or deleted. All I am interested is to grab the Person Number. I don't care about rest of the information. I know this can be done via a trigger on the table PA0000 but I do not want to go that route.
For new pernr, you can try the User Exit ZXPADU02 or BAdI HRPAD00INFTY. But you will have to check for all hiring actions on 0000.
For deleted pernrs, I don't think there is an exit. As far as I know, deletion is done only through the report RPUDELPN. (A pernr is very rarely deleted in a Production system)
What exactly are you trying to do?