VIN has never been registered
The vehicle has been through the pre-registration process but has not yet been registered (i.e. had a plate number assigned). The vehicle is new from the factory, or has recently been imported into the country.
The vehicle cannot be used on the road until it has been registered, licensed and safety inspected.
It is also possible that the NZTA does not have full registration details if the vehicle was registered before 1995.