وثانيا، أضيفت الفقرة 4 إلى المادة 23 للنص على أن سحب التحفظات (والاعتراضات) ينبغي أن يتخذ شكلا كتابيا().
States or international organizations which have made one or more reservations to a treaty should undertake a periodic review of such reservations and consider withdrawing those which no longer serve their purpose.