Judgment of the General Court (Fourth Chamber) of 20 September 2023.#YD v European Union Agency for Fundamental Rights.#Civil service – Temporary staff – Staff of the FRA – Withdrawal of the United Kingdom from the European Union – Loss of nationality of a Member State – Contract for an indefinite period – Termination of the contract – Article 47(c)(ii) of the CEOS – Application for an exception to the condition of engagement laid down in Article 12(2)(a) of the CEOS – Refusal to grant an exception – Right to be heard – Principle of impartiality – Legal certainty – Principle of non-discrimination – Interests of the service – Duty of care – Manifest error of assessment.#Case T-648/21.