40In accordance with the principle of sincere cooperation enshrined in Article 4(3) TEU, the detailed procedural rules governing actions for safeguarding an individual’s rights under EU law must be no less favourable than those governing similar domestic actions (principle of equivalence) and must not render impossible in practice or excessively difficult the exercise of rights conferred by EU law (principle of effectiveness) (judgment of 24 October 2018, XC and Others, C‑234/17, EU:C:2018:853, paragraph 22 and the case-law cited).
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