Subsequent agreement therefore may be present when there is simply a decision adopted by a meeting of the parties to a treaty, as was the case when EU member States changed the denomination of the ECU to the Euro.
因此，只要有一个条约缔约方会议通过决定就可能存在嗣后协定，例如欧盟成员国将埃居(欧洲货币单位)的面额改变为欧元就是这样一个例子。