42In the second place, it follows from settled case-law that, in accordance with the principle of proportionality, which is a general principle of EU law, the rules laid down by the Member States or contracting authorities in implementing the provisions of Directive 2014/24, such as the rules intended to lay down the implementing conditions of Article 20(1) of that directive, must not go beyond what is necessary to achieve the objectives of that directive (see, to that effect, judgment of 30 January 2020, Tim, C‑395/18, EU:C:2020:58, paragraph 45 and the case-law cited).
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