When ADOMs are enabled, you can create ADOMs and select a type. The type of ADOM determines what types of devices you can add to the ADOM. FortiManager supports the following types of ADOMs:
You can add FortiGate and other types of devices from a Security Fabric to an ADOM with Fabric type selected.
You can add only FortiGate devices to an ADOM with FortiGate type selected.
You can add only FortiCarrier devices to an ADOM with FortiCarrier type selected.
See Creating ADOMs.