Hi George,

scanner has 2 capabilities:
  - it can extract NW index (database) information and insert it into the media 
and/or client file index respectively.
  - it can recover files using the appropriate ASM (application specific module)

However, uasm is the file backup/recovery ASM which is the wrong one for the 
online backup of databases. So for recoveries/verifications etc. of a database 
you must use the appropriate tool/module. Consequently you received the error.

Just think about NW itself. To backup and recover the media index, it uses a 
specific 'module' which is nsrmmdbasm. There is still the nsrindexasm for the 
client file index databases which have been created before NW 6.0 - just in 
case such old stuff needs to be recovered.

If you really need to verify a backup, cloning is the best method - you verify 
the backup and you create a duplicate for additional security. If you already 
clone, you already have 2 valid instances of your backup data.

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