57It must be noted, however, that under Article 84a(2) of Regulation No 1408/71, a failure to respect the obligation of information referred to in the third subparagraph of Article 84a(1) may result 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 and must not make it impossible or excessively difficult in practice for claimants to exercise the rights conferred on them by that regulation.
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