The change you are about to make will result in x permissions being added to the access control list.
A random, most unusable warning window, you can get when changing security entries in the ACE in Active Directory.
Google says not much about it, accepted that -indeed- the message exists…
It seems things are going to break, but in the end, it’s just a warning.
After some testing, things got cleared out.
Apparently, ADUC fires this warning when you have more then 8 entries in the ACE that are inheriting to sub-objects.
Nothing more, nothing less.
Just hit apply 🙂