Judgment of the Court (First Chamber) of 9 January 2025.#Association Mousse v Commission nationale de l'informatique et des libertés (CNIL) and SNCF Connect.#Reference for a preliminary ruling – Protection of natural persons with regard to the processing of personal data – Regulation (EU) 2016/679 – Article 5(1)(c) – Data minimisation – Article 6(1) – Lawfulness of processing – Data relating to title and gender identity – Online sale of travel documents – Article 21