If Vehicle Identification Number is not input in the add-client command it just shows vehicle information missing error. It can be improved further by making it more specific and telling the user which part of vehicle information is missing whether VIN, VRN, make or model.

If Vehicle Identification Number is not input in the add-client command it just shows vehicle information missing error. It can be improved further by making it more specific and telling the user which part of vehicle information is missing whether VIN, VRN, make or model.