Assessment definition clarified to tie dutiability to classification, valuation, exemptions, quantity, origin and provisional/self assessments. Recasts assessment to mean determination of dutiability and payable duty, tax, cess or other sums with reference to tariff classification, value, exemptions or concessions under notifications, quantitative/measurement bases, origin where relevant, and any other specific factor; and explicitly includes provisional assessment, self-assessment, re-assessment and assessments with nil duty. Additionally updates the Board's name, replaces reference to contiguous zone with Exclusive Economic Zone, and defines 'notification' as publication in the Official Gazette.