Judgment of the Court (Second Chamber) of 5 September 2024.#European Chemicals Agency (ECHA) v Hallertauer Hopfenveredelungsges. m.b.H.#Requests for a preliminary ruling from the Bayerisches Verwaltungsgericht Regensburg and Oberverwaltungsgericht des Landes Sachsen-Anhalt.#Reference for a preliminary ruling – Article 299 TFEU – Regulation (EC) No 1907/2006 – Registration, evaluation, authorisation and restriction of chemicals (REACH) – Article 94(1) – Regulation (EC) No 340/2008 – Second subparagraph of Article 11(3) and third subparagraph of Article 13(4) – Fees due to the European Chemicals Agency (ECHA) – Fee for registration of a substance – Reduction granted to small and medium-sized enterprises (SMEs) – Verification by ECHA of the declaration relating to the size of the enterprise in question – Failure to provide certain information within the prescribed period – ECHA decision demanding payment of the full fee in question and imposing an administrative charge – Enforcement – Possibility for ECHA to bring an action before a national court in order to obtain payment of that administrative charge.#Joined Cases C-256/23 and C-290/23.