The ACC convened again in 1971, leading to agreement on transit arrangements in Berlin. During the talks for unification of Germany in late 1989, it was decided to convene the ACC again as a forum for solving the issue of Allied rights and privileges in Germany. The disbanding of the ACC was officially announced by the Two Plus Four Agreement of September 12, 1990, effective as of March 15, 1991. The ACC last met on 2 October 1990, on the eve of German Reunification.