采购入库单点击保存或者提交报错误

我修改了采购入库反写收料通知单入库数量允许超额，

然后保存就会报错

[{"operation":"STK_InStock.MBIClick.tbSplitSave"}]
发生时间： 11:58:30
错误编号： 1b57d20b1d58420eb164bc7ddd79e5ea
错误信息： 未将对象引用设置到对象的实例。
===================================================
调用堆栈：
Server stack trace:
在 Kingdee.K3.SCM.App.Pur.ServicePlugIn.PODeliveryPlanWriteBack.GetInstockWbRecSerialOrAuxPropData(AfterCommitAmountEventArgs e, String srcFormId)
在 Kingdee.BOS.Core.BusinessFlow.PlugIn.BusinessFlowServicePlugInProxy.FireAfterCommitAmount(AfterCommitAmountEventArgs e)
在 Kingdee.BOS.App.Core.BusinessFlow.WriteBackLogicUnit.AbstractBillWritebackLogic.WriteBack()
在 Kingdee.BOS.App.Core.BusinessFlow.WriteBackEngine.WriteToSourceDataEntity()
在 Kingdee.BOS.App.Core.BusinessFlow.WriteBackEngine.Do()
在 Kingdee.BOS.App.Core.BusinessFlow.BusinessFlowWriteBack.DoWriteBackEachRule(KeyValuePair`2 rule, WriteBackEngineContext engineContext)
在 Kingdee.BOS.App.Core.BusinessFlow.BusinessFlowWriteBack.DoWriteBack(Sheets`1 sheets, AED`1 aed)
在 Kingdee.BOS.App.Core.BusinessFlow.BusinessFlowTracker`1.Save(Sheets`1 sheets)
在 Kingdee.BOS.App.Core.BusinessFlow.BusinessFlowTrackerApply.Save(DynamicObject[] dataObjects, String operationNumber)
在 Kingdee.BOS.App.Core.Save.SaveConvertData(DynamicObject[] dataObject)
在 Kingdee.BOS.App.Core.AbstractOprerationService.CallOperation(DynamicObject[]& objs)
在 Kingdee.BOS.App.Core.AbstractOprerationService.CallOperatinTransaction(DynamicObject[] objs)
在 Kingdee.BOS.App.Core.AbstractOprerationService.DoExcete()
在 Kingdee.BOS.App.Core.AbstractOprerationService.Excute(DynamicObject[] dataEntities)
Exception rethrown at [0]:
在 Kingdee.BOS.ServiceHelper.BusinessDataServiceHelper.Save(Context ctx, BusinessInfo businessInfo, DynamicObject dataObject, OperateOption option, String operationNumber)
在 Kingdee.BOS.Model.Bill.BillModel.Save(OperateOption option)
在 Kingdee.BOS.Business.Bill.Operation.Save.ExecuteBillOperation(OperateOption option)
在 Kingdee.BOS.Core.DynamicForm.AbstractDynamicFormOperation.Operation(CallBackWfAfterOperation callbackwf, IOperationResult result)
在 Kingdee.BOS.Core.DynamicForm.AbstractDynamicFormOperation.Execute(InvokeFormOperation4WfParam param, CallBackWfAfterOperation callbackwf)
在 Kingdee.BOS.Web.DynamicForm.OperationCaller.InvokeFormOperation(String operationNumber)
在 Kingdee.BOS.Business.DynamicForm.BusinessService.ExcuteOperation.DoAction(FormBusinessServiceArgs e)
在 Kingdee.BOS.Core.DynamicForm.FormBusinessServiceUtil.InvokeServices(IDynamicFormView view, Object source, IEnumerable`1 services, Int32 actionType, String activeEntity, DynamicObject activeRow, Int32 rowIndex)
在 Kingdee.BOS.Web.DynamicForm.BusinessServiceCaller.InvokeFormBusiness(IDynamicFormView view, Object source, List`1 formBusinessServices, Int32 actionType, String entityKey, Int32 row)
在 Kingdee.BOS.Web.DynamicForm.DynamicWebFormView.BarItemClick(String parentKey, String barItemKey, BarDataManager bar, Int32 bartype)
在 Kingdee.BOS.Web.DynamicForm.DynamicWebFormView.MainBarItemClick(String barItemKey)
在 Kingdee.BOS.Web.DynamicForm.DynamicWebFormController.MainBarItemClick(String itemKey, JSONArray postDatas)