يشكل تحفظاً الإعلان الانفرادي الذي تستهدف منه الدولة استبعاد تطبيق معاهدة أو بعض أحكامها على إقليم كانت ستنطبق عليه هذه المعاهدة في حالة عدم وجود هذا الإعلان.
A unilateral statement, however phrased or named, formulated by a State or an international organization after initialling or signature but prior to entry into force of a bilateral treaty, by which that State or that organization purports to obtain from the other party a modification of the provisions of the treaty to which it is subjecting the expression of its final consent to be bound, does not constitute a reservation within the meaning of the present Guide to Practice.