text: More specific conventions for each type of applicable good were subsequently worked out and agreed on by the CCC.At its 47th / 48th Sessions (June 1976), the Council recommended Contracting Parties to the Customs Convention Regarding the E.C.S. Carnets for Commercial Samples to denounce it as it duplicates the ATA Convention. To date, 21 countries have deposited their instruments of denunciation of the ECS Convention which, as a result, now has only one Contracting Party (Haiti). "The States signatory to this Convention, convinced that the adoption of common procedures for the temporary duty-free importation of goods would afford considerable advantages to international commercial and cultural activities and would secure a higher degree of harmony and uniformity in the customs system of the Contracting Parties." – (Preamble of the A.T.A. Convention)
  The Istanbul Convention
  Between 1950 and 1970, there was a proliferation in the number of international Conventions, Recommendations, Agreements and other instruments on temporary admission, creating confusion for the international business community and complicating the work of Customs. 