International Opium Convention
India and other countries did not agree, saying social and religious customs and that wild-growing cannabis plants being available in many places, that would make it difficult to enforce, so this never made it into the final treaty. A compromise was made that banned the export of Indian hemp to countries that have banned its use.  Importing countries were made to issue certificates approving the import and stating that the shipment was required "exclusively for medical or scientific purposes." It also required Parties to "exercise an effective control of such a nature as to prevent the illicit international traffic in Indian hemp and especially in the resin." These restrictions still made it easy for countries to allow production, internal trade, and use of cannabis for recreational purposes.