Joined Cases C-403/23 and C-404/23, Luxone and Others: Judgment of the Court (Eighth Chamber) of 26 September 2024 (requests for a preliminary ruling from the Consiglio di Stato – Italy) – Luxone Srl, acting on its own behalf and as agent of the temporary group of undertakings to be formed with Iren Smart Solutions SpA (C-403/23), Sofein SpA, formerly Gi One SpA (C-404/23) v Consip SpA (References for a preliminary ruling – Public procurement – Directive 2004/18/EC – Article 47(3) – Article 48(4) – Exclusion of a tenderer from the tender procedure – Exclusion of the possibility to reduce the initial membership of a temporary group of undertakings which has submitted a tender – Not compatible – Period of validity of a tender – Tender does not lapse at the end of its term – Obligation under the case-law to expressly withdraw that tender – Loss of the provisional security accompanying that tender – Automatic application of that measure – Article 2 – Principles relating to public procurement – Principle of proportionality – Principle of equal treatment – Obligation of transparency – Infringement)