Customs tariff amendments: Central Government may amend the First Schedule by notification subject to parliamentary scrutiny. Central Government may amend the First Schedule by notification when satisfied it is necessary in the public interest, provided such amendment does not alter the rates at which customs duties are leviable under the Customs Act, 1962; every notification must be laid before both Houses of Parliament for thirty days and may be modified or annulled by both Houses within the following session without affecting prior actions under the notification.