During the upgrade, your existing vRealize Automation 6.2.5 licenses, and any vCloud Suite 6.x licenses that you have, are removed. You must reenter your licenses in the vRealize Automation 7.3 vRealize Automation appliance management console.
You now use vRealize Automation licensing for virtual appliances and IaaS by entering license key information in the vRealize Automation appliance. Licensing information is no longer available in the IaaS user interface and IaaS no longer performs licensing checks. Endpoints and quotas are enforced through the end-user license agreements (EULAs).
Write down your vCloud Suite 6.x license key if you used it for vRealize Automation 6.2.5 before the upgrade. Upon upgrade, existing license keys are removed from the database.
For more information about reentering your license information during or after upgrade, see Update the License Key.