Judgment of the General Court (First Chamber) of 6 September 2023.#Sopra Steria Benelux and Unisys Belgium v European Commission.#Public service contracts – Tendering procedure – Services for the specification, development, maintenance and support of IT platforms for the Directorate-General Taxation and Customs Union – Decision taken following the annulment by the General Court of a previous decision – Rejection of the tender submitted by a tenderer and award of the contract to the tenderer whose tender had initially been accepted – Execution of a judgment of the General Court – Article 266 TFEU – Manifest error of assessment.#Case T-108/22.