1. After consulting the other supervisory authorities as set out in Article 344(1) and (2), the group supervisor shall make its own decision on the application. The group supervisor shall provide its decision to the participating undertaking and the other supervisory authorities involved in the assessment of the application. The decision shall be written in an official language of the Member State of the group supervisor.
2. Where the supervisory authorities involved in the assessment of the application comprise supervisory authorities from more than one Member State, the group supervisor shall, after consultation with the other supervisory authorities and with the group itself, provide the decision referred to in paragraph 1 in another language most commonly understood by the other supervisory authorities involved.
3. After consulting the other supervisory authorities as set out in Article 344(1) and (2), the group supervisor may require the applicant to submit a realistic transitiona
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