Standard Unit Quantity Code: mandate to declare the prescribed UQC in import/export declarations to ensure data quality. The Customs Tariff Act prescribes a single Standard Unit Quantity Code for each tariff item and Customs formations must ensure the correct prescribed UQC is entered in Bills of Entry and Shipping Bills. The Directorate of Valuation will monitor correct UQC usage and DG (System) will modify software to mandate proper UQC declaration; implementation difficulties should be reported to the Board.