Judgment of the Court (Second Chamber) of 2 March 2023.#Criminal proceedings against FU and Others.#Reference for a preliminary ruling – Migrant workers – Social security – Legislation applicable – Regulation (EC) No 987/2009 – Article 5 – A1 certificate – Provisional withdrawal – Binding effect – Certificate fraudulently obtained or relied on – Regulation (EC) No 883/2004 – Article 13(1)(b)(i) – Persons normally pursuing an activity as an employed person in two or more Member States – Applicability of the legislation of the Member State in which the registered office is situated – Concept of ‘registered office’ – Undertaking which has obtained a Community licence for transport under Regulation (EC) No 1071/2009 and Regulation (EC) No 1072/2009 – Effect – Licence fraudulently obtained or relied on.#Joined Cases C-410/21 and C-661/21.