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Machine-locked reservations can be released if it has been more than 30 days since they were reserved, as described above. If the 30-day period is still active, you will still see the Release Token button, but it will not be available until after the release date, which will be shown right below it. The reservation cannot be removed before this release date.
Reservations for Upgrade Licenses
Reservations for upgrade licenses are inherited from the base license.