Parallels Plesk Backup to FTP repository with non-chrooted FTP user finishes with an error:
Unable to rotate dump: The dump rotation is failed with code '121' at /opt/psa/admin/bin/plesk_agent_manager line 1041.
FTP account that used for uploading backups is not chrooted.
Internal software issue with ID #PPPM-2188. It was fixed in Plesk 12 microupdate #44.
For Plesk 12 apply the latest Plesk microupdates.
As a workaround use a relative path to the dump directory instead of an absolute one in Plesk Control panel -> Tools & Settings -> Backup Manager -> Personal FTP Repository -> Personal FTP Repository Settings ->
<Directory for backup files storage>, i.e. '
backup/dir' instead of '
If the above fix is not working make the path as blank.