Start the Control Panel from any machine connected to the system you want to return the license for.
Navigate to Administration > Licenses
Select Manage Electronic Licenses.
In the ribbon, click Manage Licenses.
The licensing interface opens in a web browser.
Select Online Activation.
Select Entitlement ID.
Enter your Entitlement ID.
Click Return All.
Select Activation ID.
In the Total Activated column, enter how many licenses you want to keep. Entering 0 means returning all counts of this Activation ID.
Click Update.
base-id: 14079927947
id: 27021611844150923