Judgment of the General Court (Ninth Chamber, Extended Composition) of 4 September 2024.#International Management Group (IMG) v European Commission.#EU Financial Regulations – Implementation of the EU budget under indirect management by an international organisation – Decision refusing to recognise a legal person as an international organisation – Action for annulment – Lawfulness of the authority to act granted to the applicant’s lawyers – Admissibility – Decision adopted in compliance with a judgment of the Court of Justice – Article 266 TFEU – Res judicata – Principle of good administration – Legal certainty – Regulation (EU, Euratom) No 966/2012 – Article 58 – Delegated Regulation (EU) No 1268/2012 – Article 43 – Regulation (EU, Euratom) 2018/1046 – Article 156 – Concepts of ‘international organisation’ and ‘international agreement’ – Errors in law – Manifest error of assessment – Non-contractual liability.#Case T-509/21.