Activation Server 6
The Maximum Key / ID usage indicates, how often an Activation Key or Serial Number can be used. The Effective Key / ID usage indicates, how often the an Activation Key or Serial Number have been used.
This value is visible on different screens and reports and can be changed.
See also
How can I allow a second activation only for a specific user?
How can I specify the number of times a key can be used?
How do I allow to make a reinstallation on the same machine?
