•  Representativeness: At any moment, the NCB Governors with the right to vote must, as a whole, be representative of the euro area. BIS Review 16/2003  3  •  Transparency: The language of the revised Article 10.2 of the Statute has to be reasonably accessible and meet the requirements of primary Community Law. •  Consistency.
During the transition phase, great care should be taken in order to avoid that governors of certain NCBs move randomly up and down between certain groups. 2.2.2. Number and Composition of Groups, voting rights, composite indicator and representativeness  •  Two-group versus three-group models. A long debate went on concerning the number of groups and their composition.