Your license determines the products and features you can use. DRA requires a license key installed with the Administration Server.
After you install the Administration server, you can use the Health Check Utility to install your purchased license. A trial license key (TrialLicense.lic) is also included in the installation package that enables you to manage an unlimited number of user accounts and mailboxes for 30 days.
Refer to the product End User License Agreement (EULA) for additional information regarding license definition and restrictions