The license key restricts the number of users that can be added to the CMS. When that limit for the number of users is reached, the following error message is thrown when attempting to create a new user.
When updating license keys, if the new key is configured for fewer users than those currently created for the site, the following error message appears.
If the license key is for the incorrect number of users, contact Ektron support. If the license key is for the correct number of users, either remove the excess users from the site, or update the license key to allow more users. Contact your account manager for more information on license pricing.