CELEX:62021CJ0389: Judgment of the Court (First Chamber) of 4 May 2023.#European Central Bank v Crédit lyonnais.#Appeal – Economic and monetary policy – Prudential supervision of credit institutions – Regulation (EU) No 575/2013 – Calculation of the leverage ratio – Exposure measure – Article 429(14) – Exclusion of exposures meeting certain conditions – Partial refusal of authorisation – Discretion of the European Central Bank (ECB) – Action for annulment – Manifest error of assessment – Judicial review.#Case C-389/21 P.