Except as the treaty or the present Convention otherwise provide, any notification or communication to be made by any State under the present Convention shall:
- a)If there is no depositary, be transmitted directly to the States for which it is intended, or if there is a depositary, to the latter; b) Be considered as having been made by the State in question only upon its receipt by the State to which it was transmitted or, as the case may be, upon its receipt by the depositary; c) If it has been transmitted to a depositary, it shall only be understood that it has been received by the State for which it was intended when that State has received from the depositary the information provided for in subparagraph (e) of paragraph 1 of article 77.
--- **Article 79.- Correction of errors in texts or in certified true copies of treaties.** 1.- When, after the authentication of the text of a treaty, the signatory States and the contracting States by common agreement find that it contains an error, that error shall, unless those States decide to proceed to its correction in another manner, be corrected:
- a)By making the pertinent correction in the text and having it initialed by duly authorized representatives; b) By executing an instrument or exchanging instruments setting out the correction that has been agreed to be made; or c) By executing a corrected text of the entire treaty by the same procedure used for the original text.
2.- In the case of a treaty for which there is a depositary, the latter shall notify the signatory States and the contracting States of the error and of the proposal to correct it and shall set an appropriate time limit for making objections to the proposed correction.
Upon the expiration of the time limit set:
- a)If no objection has been made, the depositary shall make and initial the correction in the text, shall draw up a record of the rectification of the text, and shall communicate a copy of it to the parties to the treaty and to the States entitled to become so; b) If an objection has been made, the depositary shall communicate the objection to the signatory States and to the contracting States.
3.- The provisions of paragraphs 1 and 2 shall also apply when the text of a treaty has been authenticated in two or more languages and a lack of concordance is found that the signatory States and the contracting States agree should be corrected.
4.- The corrected text shall replace *ab initio* the defective text, unless the signatory States and the contracting States decide otherwise in this regard.
5.- The correction of the text of a treaty that has been registered shall be notified to the Secretariat of the United Nations.
6.- When an error is discovered in a certified true copy of a treaty, the depositary shall draw up a record specifying the rectification and shall communicate a copy of it to the signatory States and to the contracting States.
--- **Article 80.- Registration and publication of treaties.** 1.- Treaties shall, after their entry into force, be transmitted to the Secretariat of the United Nations for registration or filing and recording, as the case may be, and for publication.
2.- The designation of a depositary shall constitute authorization for the latter to perform the acts provided for in the preceding paragraph.
--- **PART VIII** **FINAL PROVISIONS** **Article 81.- Signature.** This Convention shall be open for signature by all States Members of the United Nations or members of any specialized agency or of the International Atomic Energy Agency, as well as by any State party to the Statute of the International Court of Justice and any other State invited by the General Assembly of the United Nations to become a party to the Convention, in the following manner: until 30 November 1969, at the Federal Ministry for Foreign Affairs of the Republic of Austria, and, thereafter, until 30 April 1970, at United Nations Headquarters in New York.
--- **Article 82.- Ratification.** This Convention is subject to ratification. The instruments of ratification shall be deposited with the Secretary-General of the United Nations.
--- **Article 83.- Accession.** This Convention shall remain open for accession by any State belonging to one of the categories mentioned in Article 81. The instruments of accession shall be deposited with the Secretary-General of the United Nations.
--- **Article 84.- Entry into force.** 1.- This Convention shall enter into force on the thirtieth day following the date on which the thirty-fifth instrument of ratification or accession has been deposited.
2.- For each State ratifying the Convention or acceding to it after the deposit of the thirty-fifth instrument of ratification or accession, the Convention shall enter into force on the thirtieth day after the deposit by such State of its instrument of ratification or accession.
--- **Article 85.- Authentic texts.** The original of this Convention, of which the Chinese, English, French, Russian and Spanish texts are equally authentic, shall be deposited with the Secretary-General of the United Nations.
IN WITNESS WHEREOF, the undersigned Plenipotentiaries, being duly authorized thereto by their respective Governments, have signed this Convention.
DONE at Vienna, this twenty-third day of May, one thousand nine hundred and sixty-nine.
**ANNEX** 1.- The Secretary-General of the United Nations shall establish and maintain a list of conciliators composed of qualified jurists. To this end, every State that is a Member of the United Nations or a party to this Convention shall be invited to designate two conciliators; the names of the persons so designated shall constitute the list. The designation of conciliators, including those designated to fill a casual vacancy, shall be for a term of five years renewable. Upon expiration of the term for which they have been designated, the conciliators shall continue to perform the functions for which they have been chosen under the following paragraph.
2.- When a request has been submitted, pursuant to Article 66, to the Secretary-General, he shall submit the dispute to a conciliation commission constituted in the following manner:
The State or States constituting one of the parties to the dispute shall appoint:
- a)One conciliator, of the nationality of that State or of one of those States, whether or not chosen from the list mentioned in paragraph 1; and b) One conciliator not having the nationality of that State or of any of those States, chosen from the list.
The State or States constituting the other party to the dispute shall appoint two conciliators in the same manner. The four conciliators chosen by the parties shall be appointed within sixty days following the date on which the Secretary-General receives the request.
The four conciliators shall, within sixty days following the date on which the last of their appointments was made, appoint a fifth conciliator, chosen from the list, who shall be chairman.
If the appointment of the chairman or of any of the other conciliators has not been made within the period prescribed above for it, it shall be made by the Secretary-General within sixty days following the expiration of that period. The Secretary-General may appoint chairman one of the persons on the list or one of the members of the International Law Commission. Any of the periods within which appointments must be made may be extended by agreement of the parties to the dispute.
Any vacancy shall be filled in the manner prescribed for the initial appointment.
3.- The Conciliation Commission shall decide its own procedure. The Commission, with the consent of the parties to the dispute, may invite any party to the treaty to submit to it its views orally or in writing. Decisions and recommendations of the Commission shall be made by a majority vote of its five members.
4.- The Commission may draw the attention of the parties to the dispute to any measures which might facilitate an amicable settlement.
5.- The Commission shall hear the parties, examine the claims and objections, and make proposals to the parties with a view to reaching an amicable settlement of the dispute.
6.- The Commission shall present its report within twelve months following the date of its constitution. The report shall be deposited with the Secretary-General and transmitted to the parties to the dispute. The report of the Commission, including any conclusions indicated therein as to the facts and questions of law, shall not be binding upon the parties and shall have no other character than that of recommendations submitted to the parties for their consideration in order to facilitate an amicable settlement of the dispute.
7.- The Secretary-General shall provide the Commission with such assistance and facilities as it may require. The expenses of the Commission shall be borne by the United Nations.
**RESERVATIONS AND DECLARATIONS MADE BY COUNTRIES AT THE TIME OF SIGNATURE OF THE VIENNA CONVENTION ON THE LAW OF TREATIES COSTA RICA** 1.- In relation to Articles 11 and 12, the delegation of Costa Rica makes the reservation that the constitutional legal system of that country does not authorize any form of consent that is not subject to ratification by the Legislative Assembly.
2.- As to Article 25, it makes the reservation that the Political Constitution of said country likewise does not admit the provisional entry into force of treaties.
3.- As to Article 27, it interprets that it refers to secondary law, not to the provisions of the Political Constitution.
4.- In relation to Article 38, it interprets that a customary rule of general international law shall not prevail over any rule of the inter-American system, of which it considers this Convention supplementary." --- **Article 2.-** It shall enter into force upon its publication.