To decommission or reset your access controller to factory settings, you'll need to decommission it from Command. This will also delete all user-related data from the controller and allow it to be transferred to a new organization.
User must be an Organization Admin
User must be an Access Admin
User must be a Site Access Admin for the controller's site
Select the Devices page from the All Products menu
Select the controller you want to decommission from the list of devices
Select the arrow in the right-hand column to move to the device's page
Select the Settings tab
Select Confirm - this cannot be undone
The controller will now reset. Wait 5 minutes before adding the controller to an organization.