Hi,
Refer the link :
When running a catalog, the following error is returned: "0xe0000900 - The requested media is not listed in the media index and could not be mounted. To add the media's catalog information to the disk-based catalogs, run an inventory operation on the media and resubmit the catalog operation."
http://support.veritas.com/docs/280017
Update us on the same and revert for any further Query
Hope this will help you
Thank you
Gauri
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