A draft assessment order cannot support a tax demand or penalty...

A draft assessment order cannot support a tax demand or penalty proceedings because a demand requires a final assessment determining the sum payable. Where an order's heading, operative language, proposed disallowance, objection mechanism and express non-issuance of demand consistently identify it as a draft, it cannot be treated as final merely as an uploading error. The statutory curative provision does not validate this substantive defect, particularly where no corrective or final assessment order follows. Draft-assessment procedure is also unavailable where no variation in international transactions is proposed, leaving no competence to issue a draft order. The draft order and consequential demand and penalty notices were set aside.