开发一个插件，里面调用了客户提供的webservice，在我本机测试正确，但把插件更新到服务器上后，报错。
但是，在服务器上，通过浏览器打开webservice，调用方法是正常的，在cloud中就报错！
搞了一天，实在是找不出哪里出的问题，求大神指导一下！
[{"operation":"STK_InStock_List.MBIClick.tbSplitApprove"}]
发生时间：09:56:47
错误来源： MyDev.K3.MFG.PRD.Business.PlugIn
错误信息：接口错误:InterfaceService.PurchaseOrderToMES！The communication object, System.ServiceModel.ChannelFactory`1[MyDev.K3.MFG.PRD.Business.PlugIn.ErpToMesInterfaceService.ErpToMesInterfaceServiceSoap], cannot be used for communication because it is in the Faulted state.
===================================================
调用堆栈：
at MyDev.K3.MFG.PRD.Business.PlugIn.InterfaceService.PurchaseOrderToMES(String dataXml, String functionName, String passWord, String userID)
at MyDev.K3.MFG.PRD.Business.PlugIn.PurchaseOrderListAudit.AfterDoOperation(AfterDoOperationEventArgs e)
at Kingdee.BOS.Core.DynamicForm.PlugIn.DynamicFormViewPlugInProxy.FireAfterDoOperation(AfterDoOperationEventArgs e)
at Kingdee.BOS.Core.DynamicForm.AbstractDynamicFormOperation.AfterExcuteOperation(IOperationResult opResult, IOperationResult result, CallBackWfAfterOperation callbackwf)
at Kingdee.BOS.Core.DynamicForm.AbstractDynamicFormOperation.Operation(CallBackWfAfterOperation callbackwf, IOperationResult result)
at Kingdee.BOS.Core.DynamicForm.AbstractDynamicFormOperation.Execute(InvokeFormOperation4WfParam param, CallBackWfAfterOperation callbackwf)
at Kingdee.BOS.Web.DynamicForm.OperationCaller.InvokeFormOperation(String operationNumber)
at Kingdee.BOS.Business.DynamicForm.BusinessService.ExcuteOperation.DoAction(FormBusinessServiceArgs e)
at Kingdee.BOS.Core.DynamicForm.FormBusinessServiceUtil.InvokeServices(IDynamicFormView view, Object source, IEnumerable`1 services, Int32 actionType, String activeEntity, DynamicObject activeRow, Int32 rowIndex)
at Kingdee.BOS.Web.DynamicForm.BusinessServiceCaller.InvokeFormBusiness(IDynamicFormView view, Object source, List`1 formBusinessServices, Int32 actionType, String entityKey, Int32 row)
at Kingdee.BOS.Web.DynamicForm.DynamicWebFormView.BarItemClick(String parentKey, String barItemKey, BarDataManager bar, Int32 bartype)
at Kingdee.BOS.Web.List.ListView.MainBarItemClick(String barItemKey)
at Kingdee.BOS.Web.DynamicForm.DynamicWebFormController.MainBarItemClick(String itemKey, JSONArray postDatas)
错误数据： System.Collections.ListDictionaryInternal
推荐阅读