More hardware devices than device licenses: An organization needs to have enough device licenses
to cover all the hardware devices in its network. A device license is consumed by each device that is
added to the network. If the number of devices exceeds the number of licenses, the organization will
be out of license and will lose access to some features and support until it purchases more licenses
or removes some devices4.
Expired device license: A device license has an expiration date that depends on the license term
purchased by the organization. If a device license expires, it will no longer be valid and will not count
towards the license limit. The organization will need to renew the expired license or purchase a new
one to avoid being out of license4.
Reference:
https://documentation.meraki.com/General_Administration/Licensing/Meraki_Licensing_FAQs