Article 3a 3.

The competent authority in the host Member State shall register the audit firm if it is satisfied that the audit firm is registered with the competent authority in the home Member State. Where the host Member State intends to rely on a certificate attesting to the registration of the audit firm in the home Member State, the competent authority in the host Member State may require that the certificate issued by the competent authority in the home Member State be not more than three months old. The competent authority in the host Member State shall inform the competent authority in the home Member State of the registration of the audit firm.