Judgment of the Court (Eighth Chamber) of 8 May 2024.#Republik Österreich v GM.#Request for a preliminary ruling from the Oberster Gerichtshof.#Reference for a preliminary ruling – Own resources of the European Union – National programme co-financed by the European Agricultural Fund for Rural Development (EAFRD) – Aid granted by contract pursuant to that programme – Protection of the European Union’s financial interests – Regulation (EC) No 2988/95 – Scope – Proceedings concerning irregularities – Article 3 – Limitation period for proceedings – Concept of ‘act interrupting the limitation period’ – Principle of proportionality – Claims for repayment of aid wrongly paid, based on the private law of a Member State.#Case C-734/22.