Is it possible to receive expiration or timeout exception when making a synchronous call?
当进行同步调用时，是否能够接收过期或超时异常？
Similar to a synchronous invocation, InvalidSymbolException indicates that the request has reached the service provider, which has thrown a business exception stating that the symbol is invalid.
与同步调用类似，InvalidSymbolException 指示 请求已到达服务提供程序，该提供程序抛出业务异常，指示符号无效。
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