Arbeitsgemeinschaft christlicher Kirchen in Deutschland
The ‘Working Group of Christian Churches’ (ACK) currently has in Germany 17 members and four guest members. Four ecumenical organisations have observer status. The administrative office in Germany, called the ‘Ökumenische Centrale’ (Ecumenical Central Office), is based in Frankfurt am Main. The ACK enables churches to work together despite the differences between them. This takes place on the basis of agreements that are binding, because the churches themselves commit to them.