Artikel 29

1. A Regional Economic Integration Organisation which is constituted solely by sovereign States and has competence over some or all of the matters governed by this Convention may similarly sign, accept, approve or accede to this Convention. The Regional Economic Integration Organisation shall in that case have the rights and obligations of a Contracting State, to the extent that the Organisation has competence over matters governed by this Convention.
2. The Regional Economic Integration Organisation shall, at the time of signature, acceptance, approval or accession, notify the depositary in writing of the matters governed by this Convention in respect of which competence has been transferred to that Organisation by its Member States. The Organisation shall promptly notify the depositary in writing of any changes to its competence as specified in the most recent notice given under this paragraph.
3. For the purposes of the entry into force of this Convention, any instrument deposited by a Regional Economic Integration Organisation shall not be counted unless the Regional Economic Integration Organisation declares in accordance with Article 30 that its Member States will not be Parties to this Convention.
4. Any reference to a “Contracting State” or “State” in this Convention shall apply equally, where appropriate, to a Regional Economic Integration Organisation that is a Party to it.