Article 21 — Enforcement measures in coordinated actions

1. Enforcement authorities taking part in the coordinated action shall, within their jurisdiction, take all necessary enforcement measures under Article 6 of Directive (EU) 2019/633 against the buyer or buyers responsible for the widespread unfair trading practice with a cross-border dimension in order to bring about the cessation of that unfair trading practice. 2. Enforcement measures pursuant to paragraph 1 shall be taken by the enforcement authorities in accordance with the national rules of their Member States and in a coordinated manner to bring about the cessation of the widespread unfair trading practice with a cross-border dimension. The enforcement authorities taking part in the coordinated action shall seek to take enforcement measures simultaneously in the Member States concerned by that widespread unfair trading practice with a cross-border dimension.