وبالمثل، لا يجوز للجهة التي أصدرت العمل أن تقوم بتعديله أو تعليقه أو إلغائه بشكل انفرادي.
The analysis should focus on relevant State practice for each unilateral act, with regard to its legal effects, requirements for its validity and questions such as revocability and termination; State practice needed to be assessed so as to decide whether it reflected only specific elements or could provide the basis for some more general principles relating to unilateral acts.