90While, under EU law, the principle of legal certainty is binding on every national authority, that is so only when that authority is responsible for applying EU law (judgments of 17 July 2008, ASM Brescia, C‑347/06, EU:C:2008:416, paragraph 65, and of 21 March 2019, Unareti, C‑702/17, EU:C:2019:233, paragraph 34).
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