Nested exception is: (wt.pom.pomResource/9) wt.pom.PersistenceException: A nested transaction cannot be started when a rollback is in progress.  The following is the rollback stacktrace.
    ROLLBACK: java.lang.Thread.getStackTrace(Thread.java:1559)
    ROLLBACK: wt.pom.TransactionManager.rollbackTransaction(TransactionManager.java:748)
    ROLLBACK: wt.pom.BasicTransactionMonitor.rollbackTransaction(BasicTransactionMonitor.java:77)
    ROLLBACK: wt.pom.PersistentObjectManager.rollbackTransaction(PersistentObjectManager.java:427)
    ROLLBACK: wt.pom.Transaction.rollback(Transaction.java:769)
    ROLLBACK: wt.fc.StandardPersistenceManager.update(StandardPersistenceManager.java:1883)
    ROLLBACK: wt.fc.StandardPersistenceManager.update(StandardPersistenceManager.java:1941)
    ROLLBACK: wt.vc.wip.StandardWorkInProgressService.checkoutMap(StandardWorkInProgressService.java:2382)
    ROLLBACK: wt.vc.wip.StandardWorkInProgressService.checkoutMap(StandardWorkInProgressService.java:2284)
    ROLLBACK: wt.vc.wip.StandardWorkInProgressService.checkoutMap(StandardWorkInProgressService.java:2264)
    ROLLBACK: wt.vc.wip.StandardWorkInProgressService.checkoutMap(StandardWorkInProgressService.java:2252)
    ROLLBACK: wt.vc.wip.StandardWorkInProgressService.checkout(StandardWorkInProgressService.java:1216)
    ROLLBACK: wt.vc.wip.StandardWorkInProgressService.checkout(StandardWorkInProgressService.java:1172)
    ROLLBACK: wt.vc.wip.StandardWorkInProgressService.checkout(StandardWorkInProgressService.java:1164)
    ROLLBACK: sun.reflect.GeneratedMethodAccessor3357.invoke(Unknown Source)
    ROLLBACK: sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    ROLLBACK: java.lang.reflect.Method.invoke(Method.java:498)
    ROLLBACK: wt.services.ServiceFactory$ServerInvocationHandler.invoke(ServiceFactory.java:399)
    ROLLBACK: com.sun.proxy.$Proxy42.checkout(Unknown Source)
    ROLLBACK: ext.com.lennox.common.LIIIBAHelper.updateAttributes(LIIIBAHelper.java:233)
    ROLLBACK: ext.com.lennox.common.LIIPDMHelper.createWTPart(LIIPDMHelper.java:306)
    ROLLBACK: ext.com.lennox.bom.LIIWTPartCreateOrUpdate.createOrUpdateWtpartDescriptionWithSameNumber(LIIWTPartCreateOrUpdate.java:100)
    ROLLBACK: ext.com.lennox.bom.LIICreateNUpdateWTPartOnCheckin.processPreCheckinCreateNLinkWTPart(LIICreateNUpdateWTPartOnCheckin.java:336)
    ROLLBACK: ext.com.lennox.bom.LIICreateNUpdateWTPartOnCheckin$1.notifyVetoableEvent(LIICreateNUpdateWTPartOnCheckin.java:228)
    ROLLBACK: wt.events.StandardKeyedEventBranch.intDispatchEvent(StandardKeyedEventBranch.java:320)
    ROLLBACK: wt.events.StandardKeyedEventBranch.dispatchVetoableMultiObjectEvent(StandardKeyedEventBranch.java:268)
    ROLLBACK: wt.events.StandardKeyedEventDispatcher.intDispatchEvent(StandardKeyedEventDispatcher.java:306)
    ROLLBACK: wt.events.StandardKeyedEventDispatcher.dispatchVetoableMultiObjectEvent(StandardKeyedEventDispatcher.java:244)
    ROLLBACK: wt.services.StandardManagerService.intDispatchVetoableEvent(StandardManagerService.java:412)
    ROLLBACK: wt.services.StandardManagerService.dispatchVetoableMultiObjectEvent(StandardManagerService.java:314)
    ROLLBACK: wt.vc.wip.StandardWorkInProgressService.dispatchVetoableMultiObjectEvent(StandardWorkInProgressService.java:314)
    ROLLBACK: wt.vc.wip.StandardWorkInProgressService.checkin(StandardWorkInProgressService.java:954)
    ROLLBACK: wt.vc.wip.StandardWorkInProgressService.checkin(StandardWorkInProgressService.java:919)
    ROLLBACK: wt.vc.wip.StandardWorkInProgressService.checkin(StandardWorkInProgressService.java:889)
    ROLLBACK: sun.reflect.GeneratedMethodAccessor3183.invoke(Unknown Source)
    ROLLBACK: sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    ROLLBACK: java.lang.reflect.Method.invoke(Method.java:498)
    ROLLBACK: wt.services.ServiceFactory$ServerInvocationHandler.invoke(ServiceFactory.java:399)
    ROLLBACK: com.sun.proxy.$Proxy42.checkin(Unknown Source)
    ROLLBACK: wt.epm.workspaces.WorkspaceCheckinManager.checkin(WorkspaceCheckinManager.java:280)
    ROLLBACK: wt.epm.workspaces.WorkspaceCheckinManager.checkin(WorkspaceCheckinManager.java:146)
    ROLLBACK: wt.epm.workspaces.EPMStandardWorkspaceManager.checkin(EPMStandardWorkspaceManager.java:1351)
    ROLLBACK: sun.reflect.GeneratedMethodAccessor2635.invoke(Unknown Source)
    ROLLBACK: sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    ROLLBACK: java.lang.reflect.Method.invoke(Method.java:498)
    ROLLBACK: wt.services.ServiceFactory$ServerInvocationHandler.invoke(ServiceFactory.java:399)
    ROLLBACK: com.sun.proxy.$Proxy120.checkin(Unknown Source)
    ROLLBACK: com.ptc.windchill.uwgm.proesrv.action.CheckinAction.executeAction(CheckinAction.java:274)
    ROLLBACK: com.ptc.windchill.uwgm.proesrv.action.UwgmAction.execute(UwgmAction.java:84)
    ROLLBACK: com.ptc.windchill.uwgm.proesrv.request.CheckinRequest.doCheckin(CheckinRequest.java:582)
    ROLLBACK: com.ptc.windchill.uwgm.proesrv.request.CheckinRequest.executeRequest(CheckinRequest.java:245)
    ROLLBACK: com.ptc.windchill.uwgm.proesrv.StandardRequestDispatcher.dispatchRequest(StandardRequestDispatcher.java:1277)
    ROLLBACK: com.ptc.windchill.uwgm.proesrv.StandardRequestDispatcher.scanRequests(StandardRequestDispatcher.java:1014)
    ROLLBACK: com.ptc.windchill.uwgm.proesrv.UwgmTransactionExecuterImpl.execute(UwgmTransactionExecuterImpl.java:109)
    ROLLBACK: com.ptc.windchill.uwgm.proesrv.UwgmTransactionExecuterImpl.executeTransaction(UwgmTransactionExecuterImpl.java:59)
    ROLLBACK: com.ptc.windchill.uwgm.proesrv.ProeService.executeTransaction(ProeService.java:111)
    ROLLBACK: com.ptc.windchill.uwgm.proesrv.ProeService.execute(ProeService.java:87)
    ROLLBACK: com.ptc.windchill.uwgm.soap.impl.uwgm.BinaryRequestHandler.processRequest(BinaryRequestHandler.java:678)
    ROLLBACK: com.ptc.windchill.uwgm.soap.impl.uwgm.BinaryRequestHandler.getCacheDescriptor(BinaryRequestHandler.java:527)
    ROLLBACK: sun.reflect.GeneratedMethodAccessor4334.invoke(Unknown Source)
    ROLLBACK: sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    ROLLBACK: java.lang.reflect.Method.invoke(Method.java:498)
    ROLLBACK: wt.httpgw.HTTPServer.processRequest(HTTPServer.java:346)
    ROLLBACK: wt.httpgw.MethodRequestHandler.handleRequest(MethodRequestHandler.java:88)
    ROLLBACK: wt.httpgw.HTTPGatewayServlet.serviceWithoutFilters(HTTPGatewayServlet.java:336)
    ROLLBACK: wt.httpgw.HTTPAuthGatewayServlet.serviceWithoutFilters(HTTPAuthGatewayServlet.java:86)
    ROLLBACK: wt.httpgw.FilterChainImpl.doFilter(FilterChainImpl.java:94)
    ROLLBACK: wt.session.SessionContextDestroyer.doFilterInternal(SessionContextDestroyer.java:136)
    ROLLBACK: wt.session.SessionContextDestroyer.doFilter(SessionContextDestroyer.java:184)
    ROLLBACK: wt.httpgw.FilterChainImpl.doFilter(FilterChainImpl.java:81)
    ROLLBACK: wt.httpgw.HTTPGatewayServlet.service(HTTPGatewayServlet.java:235)
    ROLLBACK: javax.servlet.http.HttpServlet.service(HttpServlet.java:733)
    ROLLBACK: org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
    ROLLBACK: org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    ROLLBACK: wt.licenseusage.licensing.LicenseFilter.doFilter(LicenseFilter.java:47)
    ROLLBACK: org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    ROLLBACK: org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    ROLLBACK: com.ptc.jws.servlet.filter.WsdlServletFilter.doFilter(WsdlServletFilter.java:61)
    ROLLBACK: org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    ROLLBACK: org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    ROLLBACK: com.ptc.core.ui.validation.URLValidationFilter.doFilter(URLValidationFilter.java:85)
    ROLLBACK: org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    ROLLBACK: org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    ROLLBACK: wt.httpgw.filter.WTContextBeanFilter.doWithWtContextBeanHandler(WTContextBeanFilter.java:104)
    ROLLBACK: wt.httpgw.filter.WTContextBeanFilter.doFilter(WTContextBeanFilter.java:58)
    ROLLBACK: org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    ROLLBACK: org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    ROLLBACK: wt.servlet.CompressionFilter.doFilter(CompressionFilter.java:301)
    ROLLBACK: org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    ROLLBACK: org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    ROLLBACK: wt.servlet.RequestInterrupter.doFilter(RequestInterrupter.java:335)
    ROLLBACK: org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    ROLLBACK: org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    ROLLBACK: wt.servlet.ServletRequestMonitor.doFilter(ServletRequestMonitor.java:1660)
    ROLLBACK: wt.servlet.ServletRequestMonitorFilter.doFilter(ServletRequestMonitorFilter.java:56)
    ROLLBACK: org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    ROLLBACK: org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    ROLLBACK: org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199)
    ROLLBACK: org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97)
    ROLLBACK: org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:544)
    ROLLBACK: org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:143)
    ROLLBACK: org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81)
    ROLLBACK: org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78)
    ROLLBACK: org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:364)
    ROLLBACK: org.apache.coyote.ajp.AjpProcessor.service(AjpProcessor.java:526)
    ROLLBACK: org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
    ROLLBACK: org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:831)
    ROLLBACK: org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1639)
    ROLLBACK: org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
    ROLLBACK: java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
    ROLLBACK: java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
    ROLLBACK: org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    ROLLBACK: java.lang.Thread.run(Thread.java:748)