The DEDUP backup attempt was unsuccessful for virtual machine 'virtual machine name'. Retry #retry attempt number with DEDUP still enabled.
The attempt to backup the virtual machine with DEDUP enabled was unsuccessful. Instead of failing the backup right away, an attempt is being made to retry the backup of the virtual machine with DEDUP still enabled.
Processing continues with DEDUP still enabled.
Check the log files for messages as to why DEDUP failed. If future attempts to backup using DEDUP fail, contact your system administator.