Judgment of the Court (First Chamber) of 10 December 2020.#Land Nordrhein-Westfalen v D.-H. T. as liquidator of J & S Service UG.#Request for a preliminary ruling from the Bundesverwaltungsgericht.#Reference for a preliminary ruling – Personal data – Regulation (EU) 2016/679 – Article 23 – Restrictions to the data subject’s rights – Significant financial interest – Enforcement of civil law claims – National legislation referring to the provisions of EU law – Tax data concerning a legal person – Lack of jurisdiction of the Court.#Case C-620/19.