This monitor tracks the vCenter Alarm 'Expired host time-limited license'.
By default, the alarm is triggered by the following event:
|▪||com.vmware.license.HostSubscriptionLicenseExpiredEvent: Evaluation host license expired.|
This alarm doesnot resolve be default; go to the vSphere Client and clear the alarm manually.
See the VMware Online Documentation for more information on VMware vSphere, in particular: