An operation was requested on a media ID that is in use. An example of this operation is the attempt to suspend or freeze a volume while it is in use for a backup or restore. 

Status 97: requested media ID is in use, cannot process request 

Retry the command when the volume is not in use. Use the Device Monitor to determine if the volume is in use.
To view technical notes and other information in the Symantec Knowledge Base about this status code:
https://support.symantec.com/en_US/search-result.html?type=search&startOver=Y&productSelected=51332&keywordOrPhrase=Status%2BCode%2B97&nbstatuscodeguide

he Symantec Technical Support site has a wealth of information that can help you solve NetBackup problems. Please visit the following link for comprehensive troubleshooting details specific to this error code:

    http://support.veritas.com/nbucode/97

For installation and upgrade information including hotfixes specific to your platform, check out Symantec Operations Readiness (SORT) tools at:

    https://sort.symantec.com/checklist/install