This trap is sent when a subscription license sync fails. Subscription license is synced at every 24 hours from Horizon Cloud Control Plane to Horizon on-prem. This trap indicates that the license sync failed due to the mentioned error code. If you received this event for more than one day in a row, please navigate to Horizon Admin Console and check for connectivity. You can then refer the KB http://kb.vmware.com/s/article/79509 for more information on error codes. Frequency: This event is sent when the license sync fails. After that once every 24 hrs until the issue is resolved Possible values - LicenseFailed_400, LicenseFailed_401, LicenseFailed_500 etc. The number part is the API response code from horizon enterprise. In case issue doesn't resolve after following troubleshooting steps mentioned in KB article, please reach to VMware support.