Note: If you wish to use subscription licensing, please refer to the MX and Z subscription articles for all the details. At this time, subscription and co-termination licenses can not be mixed in the same dashboard organization.
https://documentation.meraki.com/General_Administration/Licensing/Meraki_MX_Security_and_SD-WAN_Lice...
I am not a Cisco Meraki employee. My suggestions are based on documentation of Meraki best practices and day-to-day experience.
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