Retrieve your license deactivation API key from the Customer Support Portal and install it using the CLI on the firewall and Panorama. You must have superuser privileges on the firewall or Panorama to install the license API key. When you install a license API key on Panorama, Panorama pushes the API key to its managed devices. If the managed device has an API key installed, Panorama overwrites the old API key with the new one.
Install the API Key
Retrieve the license deactivation API key from the Customer Support Portal. Log in to the Customer Support Portal. From the Go To drop-down, select Licensing API. Copy the API key.
Use the CLI to install the API key on the firewall or Panorama. request license api-key set key <key>
Use the CLI to delete an installed API key if you need to replace it. request license api-key delete To deactivate a VM-Series firewall after deleting the API key, you must install a new one.

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