HomeAntarctica Status Lists ...17. Recommendations adopted at the Twelfth Consultative Meeting, done at Canberra September 13-27, 1983. hide 17. Recommendations adopted at the Twelfth Consultative Meeting, done at Canberra September 13-27, 1983. Depositary – Treaty Affairs Office of Treaty Affairs Entered into force April 27, 2004. Article IX, paragraph 4, of the Antarctic Treaty provides that recommended measures “shall become effective when approved by all the Contracting Parties whose representatives were entitled to participate in the meetings held to consider those measures.” Download status lists [125 KB] Tags Antarctic Multilateral Treaties