Judgment of the General Court (Third Chamber) of 4 October 2023.#HB v European Commission.#Public service contracts – Provision of technical assistance services to the High Judicial Council and to the Ukrainian authorities – Payment of a debt by way of out of court set-off – Legal basis – Competence of the author of the act – Whether the claim is certain and of a fixed amount – Non-contractual liability.#Case T-444/22.