how can I repair a deduplication storage

Hi,

I'm using BE 2012 SP2 with deduplication
If I backup a Fileserver with deduplication, the backup job is running fine, but the verifying job returns an error:

Überprüfen- \\<SERVER>\E:
Unstimmigkeit auf Speichermedium in Dedup:4.
V-79-57344-33994 - Von Medium gelesene Daten sind nicht konsistent.

I tried already an "inventory and catalog" but this doesn't resolve the issue.

How can I resolve this error?
How can I repair the deduplication storage?

Thanks
Matthias