Hi,

Which version of 389-ds is installed on the replica? I think you're hitting https://github.com/389ds/389-ds-base/issues/4872

The problem happens because the new replica has a schema definition for entryUUID with a new syntax. When it gets installed, the schema should get replicated to the original master but the master doesn't know this new syntax, schema replication fails, and the entries with this attribute can't be replicated to the original master.

flo