This is the number part of the vehicle registration permit being issued. A Vehicle Registration consists of both a Permit Code and a Permit Number which the user can determine or which the system can generate.
If you type a number in this column, J1 checks the validity of that value (available number) when the record is saved. If it is not available, you will receive a message to that effect. If you do not provide a number, J1 automatically generates the next available number.