time-clock-circle multiple-users-1 bin-paper-1 smiley-indifferent view-off alert-diamond envelope-letter rating-star network-browser pencil-write ticket-1 button-record headphones-customer-support close synchronize-arrows-1 common-file-stack close-quote arrow-down-2 multiple-circle attachment-1 folder-file-1 disable smiley-indifferent shield-warning love-it smiley-smile-1_1 check-circle-1 time-clock-midnight floppy-disk view smiley-unhappy book-star lock-unlock-1 arrow-right-1 archive smiley-unhappy send-email-1 hierarchy-9 open-quote add-circle-bold search remove-circle cog-1 filter-1 hyperlink-2 analytics-pie-2 flying-insect-honey navigation-menu-horizontal pencil-1 smiley-thrilled check-1 arrow-up-1 lock-2 navigation-menu add layout-module-1 archive arrow-left-1 wench arrow-down-1 multiple-neutral-1 expand-6 close drawer-send alarm-bell-1 social-media-twitter keyboard-arrow-up ticket-1 copy-paste rating-star download-thick-bottom information-circle smiley-sad-1 single-neutral-actions remove-square-1 file-code pencil-1 keyboard-arrow-down smiley-sad-1 cog single-neutral add-circle move-to-top list-bullets expand-6 undo tags-double smiley-happy view-1 messages-bubble-square print-text add-square smiley-happy credit-card-1 envelope-letter diagram-fall-down

Tape vaulting task could not find useable volume

c:\Program Files\Quantum\DATASTOR Shield\Server>vlm volume status -volume mon005l6

Volume Library Manager Command Tool (64-bit) Version 9.0.1800.1
Copyright (C) 2005-2018 Data Storage Group, Inc. All rights reserved.

 Name............... MON005L6 *Assigned* *No Barcode* ~Appendable~
 VolumeTag.......... MON005L6
 VolumeType......... *Tape*
 Enabled............ FALSE

The if the output indicates Enabled=FALSE run a property command to set Enabled=TRUE.

vlm volume property -volume [volume name] -prop Enabled=TRUE
See example:
c:\Program Files\Quantum\DATASTOR Shield\Server>vlm volume property -volume mon0
05l6 -prop Enabled=TRUE

Then, run the status command again and review the output to confirm that the Enabled status is TRUE.