Judgment of the Court (Grand Chamber) of 21 December 2021.#Randstad Italia SpA v Umana SpA and Others.#Reference for a preliminary ruling – Second subparagraph of Article 19(1) TEU – Obligation of Member States to provide remedies sufficient to ensure effective legal protection in the fields covered by Union law – Public procurement – Directive 89/665/EEC – Article 1(1) and (3) – Article 47 of the Charter of Fundamental Rights of the European Union – Judgment of a Member State’s highest administrative court declaring inadmissible, in breach of the case-law of the Court of Justice, an action brought by a tenderer excluded from a public procurement procedure – No remedy against that judgment before the highest court in that Member State’s judicial order – Principles of effectiveness and equivalence.#Case C-497/20.