The purpose of this Directive is, through the achievement of a high level of consumer protection, to contribute to the proper functioning of the internal market by ensuring that consumers can, on a voluntary basis, submit complaints against traders to entities offering independent, impartial, transparent, effective, fast and fair alternative dispute resolution procedures. This Directive is without prejudice to national legislation making participation in such procedures mandatory, provided that such legislation does not prevent the parties from exercising their right of access to the judicial system.