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ERROR_INVALID_LIBRARY
The request did not identify a valid library object
An RSM library is a container for changer hardware, drives, storage slots, doors and insert/eject ports. The offline library is also represented in the database but cannot perform physical changer operations. This status therefore points to object identity or library selection, not automatically to a hardware failure. A drive GUID, changer GUID or offline-library GUID passed where an online library is required can all make the request invalid.
Enumerate library objects and read their operational state before retrying. Verify that the selected drive or media actually belongs to the same library used by the operation. For inventory, inject, eject and door-access calls, ensure the target is an online library object and not an object contained by it.
What to inspect
- Resolve the GUID as NTMS_LIBRARY and record its name and state.
- Check whether the GUID refers to the special offline library.
- Rebuild library-to-drive and library-to-port mappings after device changes.
References
- Microsoft: RSM object types, GUIDs and operational state
- Microsoft: Removable Storage Manager objects and administration
- Microsoft: full, fast and default library inventory
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