Before installing ROK licenses on your virtual machines on VMware, be sure to allow SMBios reflection of the host to the VM's. Otherwise, authorization will fail with a This system is unsupported message.

To do this, go to the settings of your newly created VM. Click the tab Configuration, then click General, then the button Configuration Parameters. Add a new row:

SMBIOS.reflectHost = TRUE

When trying to sync updates in vCenter LifeCycle Manager, it may fail and throw the following error:

Error: ‘integrity.fault.HostPatchInvalidVendorCode’

It is usually followed by a variety of error messages, such as: invalid vendor code XXX in patch metadata.

If there are no customizations in your vCenter, you can easily fix this by resetting the vLCM update database, as per KB2147284. Run the following commands from a shell in vCenter:

service-control --stop vmware-updatemgr
/usr/lib/vmware-updatemgr/bin/updatemgr-utility.py reset-db
rm -rf /storage/updatemgr/patch-store/*
service-control --start vmware-updatemgr