Hibernate - PropertyValueException - URGENTE!

org.hibernate.PropertyValueException: not-null property references a null or transient value: br.com.maringa.requisicao.pojo.Centrocusto.regional
	at org.hibernate.engine.Nullability.checkNullability(Nullability.java:72)
	at org.hibernate.event.def.AbstractSaveEventListener.performSaveOrReplicate(AbstractSaveEventListener.java:290)
	at org.hibernate.event.def.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:181)
	at org.hibernate.event.def.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:121)
	at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId(DefaultSaveOrUpdateEventListener.java:187)
	at org.hibernate.event.def.DefaultSaveEventListener.saveWithGeneratedOrRequestedId(DefaultSaveEventListener.java:33)
	at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:172)
	at org.hibernate.event.def.DefaultSaveEventListener.performSaveOrUpdate(DefaultSaveEventListener.java:27)
	at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:70)
	at org.hibernate.impl.SessionImpl.fireSave(SessionImpl.java:535)
	at org.hibernate.impl.SessionImpl.save(SessionImpl.java:523)
	at org.hibernate.impl.SessionImpl.save(SessionImpl.java:519)
	at br.com.maringa.requisicao.dao.Dao.salvar(Dao.java:14)
	at br.com.maringa.requisicao.dao.gerenciadores.CentroCustoGerenciador.salvar(CentroCustoGerenciador.java:31)
	at br.com.maringa.requisicao.upload.ParametrizacaoFileUploadAction.gravarCC(ParametrizacaoFileUploadAction.java:422)
	at br.com.maringa.requisicao.upload.ParametrizacaoFileUploadAction.processarUsuariosCVS(ParametrizacaoFileUploadAction.java:186)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:585)
	at org.mentawai.core.InvocationChain.invoke(InvocationChain.java:302)
	at org.mentawai.filter.InjectionFilter.filter(InjectionFilter.java:114)
	at org.mentawai.core.InvocationChain.invoke(InvocationChain.java:116)
	at filtros.TotalizarStatusFilter.filter(TotalizarStatusFilter.java:17)
	at org.mentawai.core.InvocationChain.invoke(InvocationChain.java:116)
	at org.mentawai.filter.DIFilter.filter(DIFilter.java:206)
	at org.mentawai.core.InvocationChain.invoke(InvocationChain.java:116)
	at org.mentawai.filter.HibernateFilter.filter(HibernateFilter.java:187)
	at org.mentawai.core.InvocationChain.invoke(InvocationChain.java:116)
	at org.mentawai.filter.IoCFilter.filter(IoCFilter.java:83)
	at org.mentawai.core.InvocationChain.invoke(InvocationChain.java:116)
	at org.mentawai.filter.AuthenticationFilter.filter(AuthenticationFilter.java:95)
	at org.mentawai.core.InvocationChain.invoke(InvocationChain.java:116)
	at org.mentawai.core.Controller.invokeAction(Controller.java:650)
	at org.mentawai.core.Controller.service(Controller.java:515)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
	at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:672)
	at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:463)
	at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:398)
	at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301)
	at org.mentawai.core.Forward.forward(Forward.java:133)
	at org.mentawai.core.Forward.execute(Forward.java:116)
	at org.mentawai.core.Controller.service(Controller.java:542)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
	at org.displaytag.filter.ResponseOverrideFilter.doFilter(ResponseOverrideFilter.java:125)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
	at com.opensymphony.module.sitemesh.filter.PageFilter.parsePage(PageFilter.java:119)
	at com.opensymphony.module.sitemesh.filter.PageFilter.doFilter(PageFilter.java:55)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
	at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
	at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
	at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
	at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
	at java.lang.Thread.run(Thread.java:595)