The European Commission has taken Spain to the European Court of Justice (ECJ) for failing to implement the Directive on the Transparency of financial relations between Member States and public undertakings. This Directive lays down a general principle of financial transparency between public undertakings and authorities at both national and European levels. The Member States are obliged to send the Commission financial data of public undertakings active in the manufacturing sector. The Directive also gives the Commission a power of investigation regarding these transparency obligations. Spain should have implemented this Directive by 31 July 2001. In March 2005 it was formally requested to do so within a deadline of two months, which was not respected.