自己开发的BOS单据，在表体增加了新增行，删除行并未生效，且单据保存时报错，如附件所示！{"operation":"e1ad460098f14921aaccff479e460d5a.MBIClick.tbSplitSave"}]发生时间：14:03:30
错误来源： Kingdee.BOS.ServiceHelper
错误信息：Object reference not set to an instance of an object.
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调用堆栈：
Server stack trace:
at Kingdee.BOS.App.Core.Validation.EntryEntity.CompositePKValidator.KeyHelper..ctor(String[] fieldKeys, ValidateContext context)
at Kingdee.BOS.App.Core.Validation.EntryEntity.CompositePKValidator.Validate(ExtendedDataEntity[] dataEntities, ValidateContext validateContext, Context ctx)
at Kingdee.BOS.App.Core.Validation.ValidationService.Validate(IEnumerable`1 dataEntities, ValidateContext validateContext, AbstractValidator[] validators)
at Kingdee.BOS.App.Core.Validation.ValidationService.TryValidate(IEnumerable`1 dataEntities, ValidateContext validateContext, List`1& errorInfo)
at Kingdee.BOS.App.Core.AbstractOprerationService.TryValidate()
at Kingdee.BOS.App.Core.AbstractOprerationService.Validate()
at Kingdee.BOS.App.Core.AbstractSave.Validate()
at Kingdee.BOS.App.Core.AbstractOprerationService.DoExcete()
at Kingdee.BOS.App.Core.AbstractOprerationService.Excute(DynamicObject[] dataEntities)
at Kingdee.BOS.App.Core.SaveService.Save(Context ctx, BusinessInfo info, DynamicObject[] dataEntities, OperateOption option, String operationNumber)
Exception rethrown at [0]:
at Kingdee.BOS.ServiceHelper.BusinessDataServiceHelper.Save(Context ctx, BusinessInfo businessInfo, DynamicObject dataObject, OperateOption option, String operationNumber)
at Kingdee.BOS.Model.Bill.BillModel.Save(OperateOption option)
at Kingdee.BOS.Business.Bill.Operation.Save.ExecuteBillOperation(OperateOption option)
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.AbstractDynamicWebFormView.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.DynamicForm.DynamicWebFormView.MainBarItemClick(String barItemKey)
at Kingdee.BOS.Web.DynamicForm.DynamicWebFormController.MainBarItemClick(String itemKey, JSONArray postDatas)
错误数据： System.Collections.ListDictionaryInternal