3. The Commission may, after appropriate consultation with the certification scheme, repeal a decision recognising that scheme pursuant to paragraph 1 of this Article where the certification scheme fails to implement the rules set out in the implementing acts referred to in Article 11(5).
Where a Member State or any other interested party raises duly substantiated concerns that a certification scheme does not operate in accordance with the rules set out in the implementing acts referred to in Article 11(5) which constitute the basis for decisions under paragraph 1 of this Article, the Commission shall investigate the matter and take appropriate action, including repealing the relevant decision.