The error is reported in DS-User event log when attempting a backup.
Cause
The set is configured with "Local Storage Cache" option, the connection to DS-System was lost and the backup data was sent to the local cache folder, later on the DS-System could be reached and the DS-Client attempted to send the data from the local cache, but there was a backup time mismatch with generations already saved to DS-System.
Workaround
1. Apply the instructions from Knowledge Base article 1111.
2. In DS-User >right click on the affected set(s) > Properties > Options, deselect "use local cache".
3. Stop DS-Client service
4. Move somewhere else or remove the files from the local cache folder
5. Start back the DS-Client service, at this point the local cache sync will run, let it complete.
6. Run a system based sync for the affected set (In DS-User > right click on the set > Synchronize).
