MRP运算报错

版本：V7.0+12月1日的补丁
问题：MRP运算获取到第三层需求时，报错，麻烦总部给看一下，非常紧急，谢谢！

source:Kingdee.K3.MFG.PLN.App.MrpModel
message:Object reference not set to an instance of an object.
stacktrace: at Kingdee.K3.MFG.PLN.App.MrpModel.Util.MrpDSDataUtil.ProcessPlanOrderDateField(IExtendServiceProvider provider, DynamicObject planOrderData)
at Kingdee.K3.MFG.PLN.App.MrpModel.PolicyImpl.NetCalc.CommitMemoryDataPolicy.OnExecuteDataPolicy()
at Kingdee.K3.MFG.PLN.App.MrpModel.AbstractMrpDataPolicy.Execute()
at Kingdee.K3.MFG.PLN.App.MrpModel.LogicUnitImpl.Mrp.NetCalcLogicUnit.DoLastBatchDataPolicy(MrpDemandDimContext mrpDemandDimContext)
at Kingdee.K3.MFG.PLN.App.MrpModel.LogicUnitImpl.Mrp.NetCalcLogicUnit.DoComputeLogicByLLC(Decimal dLevelProgress, AbstractDSQueueBuilder demandQueueBuilder, Int64 i)
at Kingdee.K3.MFG.PLN.App.MrpModel.LogicUnitImpl.Mrp.NetCalcLogicUnit.OnExecuteLogicUnit()
at Kingdee.K3.MFG.PLN.App.MrpModel.AbstractMrpLogicUnit.Execute()
at Kingdee.K3.MFG.PLN.App.Core.MrpComputeService.RunMrp(Context ctx, DynamicObject mrpDataObject, OperateOption option)