采购订单下推入库单报错

采购订单下推入库单报错，错误信息如下，希望哪位帅哥帮忙看下

发生时间：20:34:57
错误来源： mscorlib
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.K3.SCM.App.ConvertPlugIn.BaseBillConvertServicePlugIn.ClearBillConditionField(DynamicObject entryData, String materialPty, String lotPty, String produceDatePty, String expiryDatePtr, String bomPty, String auxPropPty, String stockPty, String stockLocPty)
at Kingdee.K3.SCM.App.Pur.ServicePlugIn.PurchaseOrderToInStockService.OnAfterCreateLink(CreateLinkEventArgs e)
at Kingdee.BOS.Core.Metadata.ConvertElement.PlugIn.ConvertPlugInProxy.FireOnAfterCreateLink(CreateLinkEventArgs e)
at Kingdee.BOS.App.Core.Convertible.DefaultPolicy.FillLinkInfoAction.Do()
at Kingdee.BOS.Core.BusinessPolicyModel.BusinessPolicyEngine.Do(OperateOption context)
at Kingdee.BOS.App.Core.Convertible.ConvertEngine.OnCreating(PushArgs pushArgs, OperateOption option)
at Kingdee.BOS.App.Core.ConvertService.Push(Context ctx, PushArgs serviceArgs, OperateOption option)

Exception rethrown at [0]:
at System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg)
at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type)
at Kingdee.BOS.Contracts.IConvertService.Push(Context ctx, PushArgs serviceArgs, OperateOption option)
at Kingdee.BOS.ServiceHelper.ConvertServiceHelper.Push(Context ctx, PushArgs serviceArgs, OperateOption option)
at Kingdee.BOS.Business.Bill.Operation.Push.DoPush(OpFormReturnInfo retInfo, ListSelectedRow[] selectedRows)
at Kingdee.BOS.Web.DynamicForm.DynamicWebFormView.<>c__DisplayClass22.b__20()
错误数据： System.Collections.ListDictionaryInternal