48It is true that, in accordance with the Court’s settled case-law, the principle of legal certainty, the corollary of which is the principle of the protection of legitimate expectations, requires that rules of law be clear and precise and that the application of those rules be predictable for individuals, especially where they may have negative consequences for individuals and undertakings. In particular, that principle requires that legislation enables those concerned to know precisely the extent of the obligations which are imposed on them, and that those persons are able to ascertain unequivocally what their rights and obligations are and take steps accordingly (judgment of 15 April 2021, Federazione nazionale delle imprese elettrotecniche ed elettroniche (Anie) and Others, C‑798/18 and C‑799/18, EU:C:2021:280, paragraph 41 and the case-law cited).
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