29It is settled case-law that national measures which are liable to hinder the exercise of fundamental freedoms guaranteed by the Treaty or make it less attractive may be allowed only if they pursue an objective in the public interest, are appropriate for ensuring the attainment of that objective and do not go beyond what is necessary to attain the objective pursued (see, inter alia, judgment of 12 September 2013 in Konstantinides, C‑475/11, EU:C:2013:542, paragraph 50).
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