GLPWRM095E
Cannot edit the ACL for this subtree. One can only edit the ACL on a server that is a master server for this subtree.
Explanation
You are trying to edit an ACL for a subtree. The Web Administration Tool is not connected to the master server for this subtree.
User response
Select a different subtree for which to edit an ACL, or connect to a server that is a master server in the selected replication context, and then perform the edit ACL operation.