55Lastly, it should be noted that, in order to be able to exercise his right to an effective legal remedy, within the meaning of Article 47 of the Charter, against a decision adversely affecting his interests, the person concerned must know the reasons upon which the decision taken in relation to him is based, either by reading the decision itself or by requesting and obtaining notification of those reasons, in order that he may defend his rights in the best possible conditions and decide, with full knowledge of the relevant facts, whether there is any point in his applying to the court with jurisdiction (judgment of 4 June 2013, ZZ, C‑300/11, EU:C:2013:363, paragraph 53 and the case-law cited).
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