This serial is already activated with this installation
03/26/2020 1041 12320
DESCRIPTION: When trying to register GMS with a valid serial and receiving error " This serial is already activated with this installation."
CAUSE: The serial number is in a different account on MySonicWall.com and/or that the account, being used to register the serial, does not have permissions to the product group that GMS serial belongs to.
One of the following will resolve your issue:
Use the Current Owner's MySonicWall.com account to register the GMS
Request from Serial Number owner for permissions to that Product Group on MySonicWall.com
Request transfer of Serial Number from current owner to a new account on MySonicWall.com
Contact Customer Support to get the GMS Serial moved to that specific account
Note: The GMS serial number should be located in the account that also contains the SonicWall serials of the device that are going to be managed by this system.