15Having regard to the particular characteristics of certain provisions of services, specific requirements imposed on the provider, which result from the application of rules governing those types of activities, cannot be regarded as incompatible with the Treaty. However, as a fundamental principle of the Treaty, the freedom to provide services may be limited only by rules which are justified by imperative reasons relating to the public interest and which apply to all persons or undertakings pursuing an activity in the State of destination, in so far as that interest is not protected by the rules to which the person providing the services is subject in the Member State in which he is established. In particular, those requirements must be objectively necessary in order to ensure compliance with professional rules and to guarantee the protection of the recipient of services and they must not exceed what is necessary to attain those objectives (see, most recently, the judgments in Cases C-154/89 Commission v France [1991] ECR I-659, C-180/89 Commission v Italy [1991] ECR I-709 and C-198/89 Commissions Greece [1991] ECR I-727).
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