et/api/system.string" target="_blank">System<span id="LST3BCFFF80_2"></span><script type="text/javascript">AddLanguageSpecificTextSet("LST3BCFFF80_2?cs=.|vb=.|cpp=::|nu=.|fs=.");</script>String</a><br />子商户id，一个母商户公众号下唯一。</dd><dt><span class="parameter">timeOut</span> (Optional)</dt><dd>类型：<a href="https://docs.microsoft.com/dotnet/api/system.int32" target="_blank">System<span id="LST3BCFFF80_3"></span><script type="text/javascript">AddLanguageSpecificTextSet("LST3BCFFF