Erro Cadastro na Pilha

Alguém sabe o que significa essa pilha???

java.lang.reflect.InvocationTargetException
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:601)
	at com.dpcomp.webevolution.framework.view.WaveServlet.executeWebClass(WaveServlet.java:41)
	at com.wave.erp.viewria.servlet.ERPAbstractServlet.executeWebClassSpring(ERPAbstractServlet.java:46)
	at com.wave.erp.viewria.servlet.ERPServlet.service(ERPServlet.java:73)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at com.wave.erp.viewria.servlet.SecurityFilter.doFilter(SecurityFilter.java:94)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:224)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:169)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
	at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:927)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
	at com.springsource.insight.collection.tcserver.request.HttpRequestOperationCollectionValve.invoke(HttpRequestOperationCollectionValve.java:84)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:987)
	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:579)
	at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:309)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
	at java.lang.Thread.run(Thread.java:722)
Caused by: javax.persistence.EntityNotFoundException: Unable to find com.wave.erp.orm.cadastro.ERPCfopUf with id com.wave.erp.orm.cadastro.ERPCfopUf$PK@7aea
	at org.hibernate.ejb.Ejb3Configuration$Ejb3EntityNotFoundDelegate.handleEntityNotFound(Ejb3Configuration.java:109)
	at org.hibernate.event.def.DefaultLoadEventListener.load(DefaultLoadEventListener.java:145)
	at org.hibernate.event.def.DefaultLoadEventListener.proxyOrLoad(DefaultLoadEventListener.java:195)
	at org.hibernate.event.def.DefaultLoadEventListener.onLoad(DefaultLoadEventListener.java:103)
	at org.hibernate.impl.SessionImpl.fireLoad(SessionImpl.java:878)
	at org.hibernate.impl.SessionImpl.internalLoad(SessionImpl.java:846)
	at org.hibernate.type.EntityType.resolveIdentifier(EntityType.java:557)
	at org.hibernate.type.EntityType.resolve(EntityType.java:379)
	at org.hibernate.type.EntityType.replace(EntityType.java:259)
	at org.hibernate.type.CollectionType.replaceElements(CollectionType.java:451)
	at org.hibernate.type.CollectionType.replace(CollectionType.java:518)
	at org.hibernate.type.TypeFactory.replace(TypeFactory.java:482)
	at org.hibernate.event.def.DefaultMergeEventListener.copyValues(DefaultMergeEventListener.java:340)
	at org.hibernate.event.def.DefaultMergeEventListener.entityIsDetached(DefaultMergeEventListener.java:267)
	at org.hibernate.event.def.DefaultMergeEventListener.onMerge(DefaultMergeEventListener.java:120)
	at org.hibernate.event.def.DefaultMergeEventListener.onMerge(DefaultMergeEventListener.java:53)
	at org.hibernate.impl.SessionImpl.fireMerge(SessionImpl.java:677)
	at org.hibernate.impl.SessionImpl.merge(SessionImpl.java:661)
	at org.hibernate.impl.SessionImpl.merge(SessionImpl.java:665)
	at org.hibernate.ejb.AbstractEntityManagerImpl.merge(AbstractEntityManagerImpl.java:228)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:601)
	at org.springframework.orm.jpa.SharedEntityManagerCreator$SharedEntityManagerInvocationHandler.invoke(SharedEntityManagerCreator.java:198)
	at $Proxy180.merge(Unknown Source)
	at com.dpcomp.webevolution.framework.dao.GenericDAO.atualizar(GenericDAO.java:21)
	at com.wave.erp.cadastro.dao.cadastro.ERPCfopDAO.atualizar(ERPCfopDAO.java:24)
	at com.wave.erp.cadastro.bo.cadastro.ERPCfopBO.atualizar(ERPCfopBO.java:41)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:601)
	at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:307)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:182)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:149)
	at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:106)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
	at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
	at $Proxy229.atualizar(Unknown Source)
	at com.wave.erp.cadastro.controller.cadastro.ManterERPCfop.alterar(ManterERPCfop.java:83)
	... 27 more

Estou tentando cadastrar um novo objeto em uma pilha dentro de um cadastro normal.

Significa que esse cara

Caused by: javax.persistence.EntityNotFoundException: Unable to find com.wave.erp.orm.cadastro.ERPCfopUf with id com.wave.erp.orm.cadastro.ERPCfopUf$PK@7aea não foi encontrado ou não existe

Dá uma olhada nesse post, na página 7 JPA Consultas e Dicas