A fault handler is triggered when a fault is thrown by the runtime infrastructure, when a service is called, or when a throw activity runs.

当运行时基础结构抛出错误时、调用服务时或者在抛出活动运行时会引发错误处理程序。

youdao

Any other values generate either an error in the client code or a fault when the Web service is called.

其他任何值都会在客户机代码中生成一个错误，如果调用了Web服务，则生成一个故障。

youdao