Revoking makes used licenses available again. You may need it in the following cases:
Revoke the license from the machine either before or after uninstalling the component.
Revoke the license from the machine either before or after taking out the machine.
Make sure that revoking and subsequent reusing the license does not contradict the license agreement and other legal requirements.
To revoke a license:
Expand the required product and then expand the key.