You cannot use a feature or change its configuration.
You cannot use or configure a feature and a licensing-related error message appears.
If you downgrade your license from evaluation mode to a license that does not support the features that you configured while you used evaluation mode, you receive a warning message about license downgrade.
Check the licensed features on the host and on the vCenter Server system. Upgrade the edition of the license assigned to the host or vCenter Server if they do not include the features that you try to configure or use.