38It must be recalled that the need to provide an interpretation of EU law which will be of use to the national court means that the national court is bound to observe scrupulously the requirements concerning the content of a request for a preliminary ruling, expressly set out in Article 94 of the Rules of Procedure of the Court of Justice, of which the referring court should be aware (judgment of 26 July 2017, Persidera, C‑112/16, EU:C:2017:597, paragraph 27). Those requirements are, moreover, stated in the Court’s Recommendations to national courts and tribunals in relation to the initiation of preliminary ruling proceedings (OJ 2018 C 257, p. 1).