Article 21 4.

Competent authorities shall immediately alert competent authorities of other Member States and the Commission when they detect any potential non-compliance with this Regulation and serious shortcomings that could affect more than one Member State. Competent authorities shall, in particular, inform competent authorities of other Member States when they detect a relevant product on the market that they consider to be a non-compliant product, to enable the withdrawal or recall of such product from sales in all Member States.