The following error can be seen in the Directory Connector CMN.log file in the Exchange to Notes direction:
Exchange-to-Notes_update step for Exchange to Notes DOMINOSERVER step id 179
Started: 05/10/2025 10:33:43 Finished: 05/10/2025 10:33:51
Synchronization steps aborted. Details: Invalid RDN value:
USER
WORKAROUND
Locate and remove the offending objects in Notes whose "FullName" does not begin with "CN=".
STATUS
An Enhancement Request, TFS 275352, has been created to allow for CMN to be more tolerant of malformed objects in Notes.