-6018 FFFFE87E   ERR SERIAL NUM MISMATCH

Source:  eDirectory

Explanation:  A serial number does not match the database's serial number.

Possible Cause:  This error is reported when an incremental backup is being restored and the serial number of the database stored in the incremental backup's header does not match the serial number of the database. Generally, this means that an attempt is being made to restore an incremental backup from another database.

Action:  Locate the correct RFL file and retry the operation.