Palestine & the Convention on the Elimination of All Forms of Discrimination against Women: Implications of Ratification depositary of the present Convention. 3. The present Convention is subject to ratification. Instruments of ratification shall be deposited with the Secretary-General of the United Nations. 4. The present Convention shall be open to accession by all States. Accession shall be effected by the deposit of an instrument of accession with the Secretary-General of the United Nations. Article 26 1. A request for the revision of the present Convention may be made at any time by any State Party by means of a notification in writing addressed to the Secretary-General of the United Nations. 2. The General Assembly of the United Nations shall decide upon the steps, if any, to be taken in respect of such a request. Article 27 1. The present Convention shall enter into force on the thirtieth day after the date of deposit with the Secretary-General of the United Nations of the twentieth instrument of ratification or accession. 2. For each State ratifying the present Convention or acceding to it after the deposit of the twentieth instrument of ratification or accession, the Convention shall enter into force on the thirtieth day after the date of the deposit of its own instrument of ratification or accession. Article 28 1. The Secretary-General of the United Nations shall receive and circulate to all States the text of reservations made by States at the time of ratification or accession. 2. A reservation incompatible with the object and purpose of the present Convention shall not be permitted. 3. Reservations may be withdrawn at any time by notification to this effect addressed to the Secretary-General of the United Nations, who shall then inform all States thereof. Such notification shall take effect on the date on which it is received. Article 29 1. Any dispute between two or more States Parties concerning the interpretation or application of the present Convention which is not settled by negotiation shall, at the request of one of them, be submitted to arbitration. If within six months from the date of the request for arbitration the parties are unable to agree on the organization of the arbitration, any 49