凭证生成时报错‘给定关键字不在字典中’

在 System.Collections.Generic.Dictionary`2.get_Item(TKey key)
在 Kingdee.K3.FIN.App.Core.BuildVoucher.BuildPolicy.BuildVoucherLogic.UpdateUnitQty.UpdateBaseAndAcctQty()
在 Kingdee.K3.FIN.App.Core.BuildVoucher.BuildPolicy.BuildBizVoucherAction.DoOneSourceBill(BuildSingleVoucherResult buildResult)
在 Kingdee.K3.FIN.App.Core.BuildVoucher.BuildPolicy.BuildBizVoucherAction.DoBatch(List`1 currBatchBillIds)
在 Kingdee.K3.FIN.App.Core.BuildVoucher.BuildPolicy.BuildBizVoucherAction.DoAction()
在 Kingdee.BOS.Core.BusinessPolicyModel.BusinessPolicyEngine.Do(OperateOption context)
在 Kingdee.K3.FIN.App.Core.BuildVoucher.BuildVoucherEngine.DoEveryTemplate(VchSelectBookInfor book, VchSelectSourceBillInfor sourceBill, VCHTemplateInfor vchTemplate, BuildResultManager resultManager, Int32 logBootLevel)
在 Kingdee.K3.FIN.App.Core.BuildVoucher.BuildVoucherEngine.DoEverySourceBill(VchSelectBookInfor book, VchSelectSourceBillInfor sourceBill, Int32& iBill, HashSet`1 glVchIds)
在 Kingdee.K3.FIN.App.Core.BuildVoucher.BuildVoucherEngine.BuildVoucher(BizVchMakeSchemeInfor buildVoucherScheme)
在 Kingdee.K3.FIN.App.Core.BuildVoucher.BuildVoucherService.BuildVoucher(Context ctx, BizVchMakeSchemeInfor buildVoucherScheme)
在 Kingdee.K3.FIN.GL.ServiceHelper.BuildVoucherServiceHelper.BuildVoucher(Context ctx, BizVchMakeSchemeInfor buildVoucherScheme)
在 Kingdee.K3.FIN.GL.Business.PlugIn.BuildVoucherServiceProgressPlugIn.GenerateVoucher()

凭证生成时报错提示‘给定关键字不在字典中’，请问各位老师，这是什么原因呢，
产品6.2，补丁是4月21日的