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1. A regional economic integration organization that is constituted by sovereign States and has competence over certain matters governed by this Convention may similarly sign, ratify, accept, approve or accede to this Convention. The regional economic integration organization shall in that case have the rights and obligations of a Contracting State, to the extent that that organization has competence over matters governed by this Convention. When the number of Contracting States is relevant in this Convention, the regional economic integration organization does not count as a Contracting State in addition to its member States which are Contracting States.
2. The regional economic integration organization shall, at the time of signature, ratification, acceptance, approval or accession, make a declaration to the depositary specifying the matters governed by this Convention in respect of which competence has been transferred to that organization by its member States. The regional economic integration organization shall promptly notify the depositary of any changes to the distribution of competence, including new transfers of competence, specified in the declaration pursuant to this paragraph.
3. Any reference to a “Contracting State” or “Contracting States” in this Convention applies equally to a regional economic integration organization when the context so requires.