The administrative authorisation provided for in Article L. 329-1 is issued to branches of undertakings referred to in 4° of Article L. 310-2, under the conditions set out in Articles R. 321-1, R. 321-3, R. 321-5, R. 321-14, R. 321-16 to R. 321-18, if this undertaking is authorised to carry on insurance business under the national legislation to which it is subject and if it undertakes to establish at the head office of the branch accounts specific to the business it carries on there, and to keep there all documents relating to the business transacted. This authorisation is refused under the conditions set out in article R. 321-4.