The referendum was approved by the Catalan parliament in a session on 6 September 2017 along with the Law of juridical transition and foundation of the Republic of Catalonia the following day 7 of September, which stated that independence would be binding with a simple majority, without requiring a minimum turnout. After being suspended, the law was finally declared void on 17 October, being also illegal according to the Statute of Autonomy of Catalonia which requires a two-thirds majority, 90 seats, in the Catalan parliament for any change to Catalonia's status.