ولئن كان ك. ياسين (العراق) يرى أن الأمر يتعلق ب‍ "شرط إضافي لا داعي لـه في إجراءات من المفروض تسهيلها قدر الإمكان"()، فإن المبدأ اعتمد بالإجماع()، وتقرر إدراج هذه التوضيح لا في المادة 20 نفسها بل في المادة 23 المخصصة ل‍ "الإجراءات المتعلقة بالتحفظات" بصفة عامة، ووضعت في نهاية الفرع بسبب إدراج الفقرة 4 الجديدة().
Several States made proposals to restore the requirement of written withdrawal with a view to bringing the provision “into line with article 18 [23 in the definitive text of the Convention], where it was stated that a reservation, an express acceptance of a reservation and an objection to a reservation must be formulated in writing.” Although K. Yasseen (Iraq) considered that “an unnecessary additional condition [was thereby introduced] into a procedure which should be facilitated as much as possible”, the principle was unanimously adopted and it was decided to include this provision not in article 20 itself, but in article 23, which dealt with “Procedure regarding reservations” in general and was, as a result of the inclusion of this new paragraph 4, placed at the end of the section.