Allowance for deficiency in the contents of any examination package reported to the port director by a Customs officer shall be made in the liquidation of the entry. No Customs officer except one making an examination contemplated by section 499, Tariff Act of 1930, as amended (19 U.S.C. 1499), shall report a supposed deficiency to the port director unless it is established to the satisfaction of the reporting officer that the merchandise was not imported.