Judgment of the Court (Tenth Chamber) of 13 June 2024.#A GmbH & Co. KG v Hauptzollamt B.#Request for a preliminary ruling from the Bundesfinanzhof.#Reference for a preliminary ruling – Customs union – Common Customs Tariff – Classification of goods – Combined Nomenclature – Tariff heading 9406 00 – Prefabricated buildings – Scope of the concept of ‘building’ – Calf hutches – Request for classification under subheading 9406 00 80 – Classified under subheading 3926 90 97.#Case C-104/23.