Case C-423/18: Judgment of the Court (Eighth Chamber) of 17 October 2019 (request for a preliminary ruling from the Finanzgericht Baden-Württemberg — Germany) — Südzucker AG v Hauptzollamt Karlsruhe (Reference for a preliminary ruling — Agriculture — Common organisation of markets — Regulation (EC) No 967/2006 — Article 3(2) — Sugar — Surplus amount — Time limit for notifying the total levy to be paid — Time limit for a retrospective correction — Principles of proportionality, legal certainty and the protection of legitimate expectations)