Judgment of the Court (Grand Chamber) of 26 January 2021.#Johannes Dietrich and Norbert Häring v Hessischer Rundfunk.#Requests for a preliminary ruling from the Bundesverwaltungsgericht.#Reference for a preliminary ruling – Economic and monetary policy – Article 2(1) and Article 3(1)(c) TFEU – Monetary policy – Exclusive competence of the European Union – Article 128(1) TFEU – Protocol (No 4) on the Statute of the European System of Central Banks and of the European Central Bank – Article 16, first paragraph – Concept of ‘legal tender’ – Effects – Obligation to accept euro banknotes – Regulation (EC) No 974/98 – Whether possible for Member States to impose limitations on payments by means of banknotes and coins denominated in euro – Conditions – Regional legislation precluding the payment in cash of a radio and television licence fee to a regional public broadcasting body.#Joined Cases C-422/19 and C-423/19.