103According to settled case-law, when the wording of secondary European Union law is open to more than one interpretation, preference should be given to the interpretation which renders the provision consistent with the Treaty. An implementing regulation must also be given, if possible, an interpretation consistent with the provisions of the basic regulation (Case C-90/92Dr Tretter [1993] ECR I-3569, paragraph 11, and Case C-61/94Commission v Germany [1996] ECR I-3989, paragraph 52).