Consider a template ACLs with ten alias in it, and applied to an object with a alias set, but alias set has only nine alias, what happens when ACL gets applied to it ?
Nine alias set gets resolved with proper user/group with proper permission, but ACL on the object will have only nine user/group and the 10th one would removed
Throws error on apply of ACL
It resolves the missing one with dm_world
It resolves the missing one with dm_owner