Judgment_paragraph 43 · FS v Chief Appeals Officer and Others (C-3/21)

43In that regard, the Court has already held that a failure to respect the obligation of information referred to in that provision may result, in accordance with Article 76(5) of that regulation, only in the application of proportionate measures in accordance with national law, which must be equivalent to those applicable to similar situations under domestic law (principle of equivalence) and must not make it impossible or excessively difficult in practice for claimants to exercise the rights conferred on them by that regulation (principle of effectiveness) (see, to that effect, judgment of 4 June 2015, Fischer-Lintjens, C‑543/13, EU:C:2015:359, paragraph 57).