Unless the treaty otherwise provides, or it is otherwise agreed, the withdrawal of a reservation becomes operative in relation to a contracting State or a contracting organization only when notice of it has been received by that State or that organization.
除条约另有规定或另经协议外，撤回保留只有在一缔约国或一缔约组织收到撤回通知时才开始对该国或该组织发生效力。