If you are migrating a multi-master replicated topology, a situation will arise where a 11g Release 1 (11.1.1) master is replicating to a old server. In this situation, an object class violation will occur if changes are made to the password policy attributes on the 11g Release 1 (11.1.1) server, and replicated to the old server. The password policy attributes are managed internally by the server but they might be updated in the event of a bind, a user password modify, or the addition of an entry with the userpassword attribute.
To avoid the object class violation, the 11g Release 1 (11.1.1) password policy schema file (00ds6pwp.ldif) must be copied to every version 5.2 server that will be supplied by a 11g Release 1 (11.1.1) master. When the password policy schema file has been copied, restart the version 5.2 server.