34In so far as the implementation of certain provisions of a regulation so require, Member States may adopt implementing measures for a regulation provided that (i) they do not thereby obstruct its direct applicability or conceal its nature as an act of EU law, (ii) they specify that they are acting in exercise of a discretion conferred on them under that regulation, and (iii) they adhere to the parameters laid down thereunder (see, to that effect, judgment of 12 April 2018, Commission v Denmark, C‑541/16, EU:C:2018:251, paragraphs 27 and 28 and the case-law cited).
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