Judgment of the General Court (First Chamber) of 14 December 2018.#FZ and Others v European Commission.#Civil Service – Officials – Reform of the Staff Regulations – Regulation (EU, Euratom) No 1023/2013 – Types of posts – Transitional rules for classification in a type of post – Article 30 of Annex XIII to the Staff Regulations – Administrators in transition (AD 13) – Administrators (AD 12) – Promotion under Article 45 of the Staff Regulations allowed only within the career stream corresponding to the type of post occupied – Access to the type of post ‘head of unit or equivalent’ or ‘adviser or equivalent’ only in accordance with the procedure laid down in Article 4 and Article 29(1) of the Staff Regulations – Equal treatment – Loss of eligibility for promotion to a higher grade – Legitimate expectations.#Case T-526/16.