Last 2 days I have encountered the error above, the previous backup on DPM went fine.
Checked that space was not an issue, the services were all started, rebooted the SharePoint server as windows updates were applied and still got the error.
Simple fix is to do the following:
- Navigate to C:\Program Files\Microsoft Data Protection Manager\DPM\Active Owner.
- Remove or rename the files that are 0 KB in size.
- Run a consistency check again on the replica and it should go through now.
Hope it helps