Backup Errors:
'Error merging delta files for file .... DeltaReader::_ReadHeader - error reading header...'
'Error merging delta files for file .... Create file failed e0140007'
Restore Errors:
'Restorer::GenerateDeltaMergeList - missing baseline'
restore cannot restore delta file with empty version list
https://www.veritas.com/support/en_US/article.100047617
Corrupt baseline version of a backed up file.
The Baseline of a file can become corrupt for several reasons including, Hard Disk errors or Virus Scanner scanning files stored on the Network User Data Folder (NUDF).
To resolve this issue the files and all revisions of the files that are showing the error need to be deleted from within the DLO Admin Console Restore view so that they can be backed up again.