Unique Device Management device ID.
In case of a self-provided endpoint name that is used to initiate the device registration, Device Management provides a new device ID to be used from that point on. The new Pelion platform provided Device ID is forwarded as the 'ep' property and the original self-provided one as the optional 'original-ep' property in a registration notification. The name and ID can then be mapped accordingly. Device Management saves the original endpoint name in the Device Directory for future device registrations so that you don't need to do the mapping again.
Queue mode (default value is false).