Opinion of Advocate General Emiliou delivered on 27 October 2022.#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