42That interpretation is supported by Article 72(4) of that directive, under which a modification of a contract must be considered to be substantial where it introduces conditions which, had they been part of the initial procurement procedure, would have allowed for the admission of other candidates than those initially selected or for the acceptance of a tender other than that originally accepted or would have attracted additional participants in the procurement procedure, and by the objective pursued by the directives in this area of attaining the widest possible opening up of public contracts to competition to the benefit not only of economic operators but also of contracting authorities (judgment of 27 November 2019, Tedeschi and Consorzio Stabile Istant Service, C‑402/18, EU:C:2019:1023, paragraph 39).
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