53According to the Court’s settled case-law, if the judicial review guaranteed by Article 47 of the Charter is to be effective, the person concerned must be able to ascertain 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, without prejudice to the power of the court with jurisdiction to require the authority concerned to provide that information (Joined Cases C-372/09 and C-373/09 Peñarroja Fa [2011] ECR I-1785, paragraph 63, and Case C-430/10 Gaydarov [2011] ECR I-11637, paragraph 41), so as to make it possible for him to defend his rights in the best possible conditions and to decide, with full knowledge of the relevant facts, whether there is any point in his applying to the court with jurisdiction, and in order to put the latter fully in a position in which it may carry out the review of the lawfulness of the national decision in question (see, to this effect, Case 222/86 Heylens and Others [1987] ECR 4097, paragraph 15, and Joined Cases C-402/05 P and C-415/05 P Kadi and Al Barakaat International Foundation v Council and Commission [2008] ECR I-6351, paragraph 337).
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