I guess you’re trying to claim some APs but are unable to do so as they exist in another Org that you don’t have access to?
Theres no way of finding this out and Meraki support won’t be able to assist.
you’ll need to contact who ever you got the APs from and ask them to unclaim.
Darren OConnor | doconnor@resalire.co.uk
https://www.linkedin.com/in/darrenoconnor/
I'm not an employee of Cisco/Meraki. My posts are based on Meraki best practice and what has worked for me in the field.