this is my register.xhtml <f:view> <h:form> <s:validateAll> <h:panelGrid columns="2"> </h:panelGrid> </s:validateAll> <h:messages/> <h:commandButton value="Register" action="#{register.register}"/> <s:link id="registered" view="/registered.xhtml" value="ddd" /> </h:form> </f:view> when I click ddd(s:link) , the application work but click button action show the error message javax.portlet.PortletException: Error process faces request at javax.portlet.faces.GenericFacesPortlet.processAction(GenericFacesPortlet.java:168) at org.jboss.portal.portlet.impl.jsr168.PortletContainerImpl.invokeAction(PortletContainerImpl.java:458) at org.jboss.portal.portlet.impl.jsr168.PortletContainerImpl.dispatch(PortletContainerImpl.java:401) at org.jboss.portal.portlet.container.PortletContainerInvoker$1.invoke(PortletContainerInvoker.java:86) at org.jboss.portal.common.invocation.Invocation.invokeNext(Invocation.java:131) at org.jboss.portal.core.aspects.portlet.TransactionInterceptor.org$jboss$portal$core$aspects$portlet$TransactionInterceptor$invokeNotSupported$aop(TransactionInterceptor.java:86) at org.jboss.portal.core.aspects.portlet.TransactionInterceptor$invokeNotSupported_N4547270787964792031.invokeNext(TransactionInterceptor$invokeNotSupported_N4547270787964792031.java) at org.jboss.aspects.tx.TxPolicy.invokeInNoTx(TxPolicy.java:66) at org.jboss.aspects.tx.TxInterceptor$NotSupported.invoke(TxInterceptor.java:112) at org.jboss.portal.core.aspects.portlet.TransactionInterceptor$invokeNotSupported_N4547270787964792031.invokeNext(TransactionInterceptor$invokeNotSupported_N4547270787964792031.java) at org.jboss.aspects.tx.TxPolicy.invokeInNoTx(TxPolicy.java:66) at org.jboss.aspects.tx.TxInterceptor$NotSupported.invoke(TxInterceptor.java:102) at org.jboss.portal.core.aspects.portlet.TransactionInterceptor$invokeNotSupported_N4547270787964792031.invokeNext(TransactionInterceptor$invokeNotSupported_N4547270787964792031.java) at org.jboss.portal.core.aspects.portlet.TransactionInterceptor.invokeNotSupported(TransactionInterceptor.java) at org.jboss.portal.core.aspects.portlet.TransactionInterceptor.invoke(TransactionInterceptor.java:56) at org.jboss.portal.portlet.invocation.PortletInterceptor.invoke(PortletInterceptor.java:38) at org.jboss.portal.common.invocation.Invocation.invokeNext(Invocation.java:115) at org.jboss.portal.core.aspects.portlet.HeaderInterceptor.invoke(HeaderInterceptor.java:50) at org.jboss.portal.portlet.invocation.PortletInterceptor.invoke(PortletInterceptor.java:38) at org.jboss.portal.common.invocation.Invocation.invokeNext(Invocation.java:115) at org.jboss.portal.portlet.aspects.portlet.ProducerCacheInterceptor.invoke(ProducerCacheInterceptor.java:53) at org.jboss.portal.portlet.invocation.PortletInterceptor.invoke(PortletInterceptor.java:38) at org.jboss.portal.common.invocation.Invocation.invokeNext(Invocation.java:115) at org.jboss.portal.core.aspects.portlet.AjaxInterceptor.invoke(AjaxInterceptor.java:51) at org.jboss.portal.portlet.invocation.PortletInterceptor.invoke(PortletInterceptor.java:38) at org.jboss.portal.common.invocation.Invocation.invokeNext(Invocation.java:115) at org.jboss.portal.portlet.aspects.portlet.ModesInterceptor.invoke(ModesInterceptor.java:62) at org.jboss.portal.portlet.invocation.PortletInterceptor.invoke(PortletInterceptor.java:38) at org.jboss.portal.common.invocation.Invocation.invokeNext(Invocation.java:115) at org.jboss.portal.portlet.bridge.BridgeInterceptor.invoke(BridgeInterceptor.java:47) at org.jboss.portal.portlet.invocation.PortletInterceptor.invoke(PortletInterceptor.java:38) at org.jboss.portal.common.invocation.Invocation.invokeNext(Invocation.java:115) at org.jboss.portal.portlet.aspects.portlet.WindowStatesInterceptor.invoke(WindowStatesInterceptor.java:55) at org.jboss.portal.portlet.invocation.PortletInterceptor.invoke(PortletInterceptor.java:38) at org.jboss.portal.common.invocation.Invocation.invokeNext(Invocation.java:115) at org.jboss.portal.portlet.aspects.portlet.PortletSessionSynchronizationInterceptor.invoke(PortletSessionSynchronizationInterceptor.java:80) at org.jboss.portal.portlet.invocation.PortletInterceptor.invoke(PortletInterceptor.java:38) at org.jboss.portal.common.invocation.Invocation.invokeNext(Invocation.java:115) at org.jboss.portal.portlet.aspects.portlet.ContextTrackerInterceptor.invoke(ContextTrackerInterceptor.java:46) at org.jboss.portal.portlet.invocation.PortletInterceptor.invoke(PortletInterceptor.java:38) at org.jboss.portal.common.invocation.Invocation.invokeNext(Invocation.java:115) at org.jboss.portal.portlet.aspects.portlet.ContextDispatcherInterceptor$1.doCallback(ContextDispatcherInterceptor.java:104) at org.jboss.portal.web.command.CommandDispatcher$CallbackCommand.execute(CommandDispatcher.java:74) 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.jboss.portal.web.command.CommandServlet.doGet(CommandServlet.java:131) at org.jboss.portal.web.command.CommandServlet.doPost(CommandServlet.java:162) at javax.servlet.http.HttpServlet.service(HttpServlet.java:710) at javax.servlet.http.HttpServlet.service(HttpServlet.java:803) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:654) at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:557) at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:481) at org.jboss.portal.web.command.CommandServlet.include(CommandServlet.java:80) at org.jboss.portal.web.command.CommandDispatcher.include(CommandDispatcher.java:50) at org.jboss.portal.web.jboss.JBossWebContext.include(JBossWebContext.java:66) at org.jboss.portal.web.ServletContainer.include(ServletContainer.java:182) at org.jboss.portal.portlet.impl.spi.AbstractRequestContext.dispatch(AbstractRequestContext.java:81) at org.jboss.portal.portlet.aspects.portlet.ContextDispatcherInterceptor.invoke(ContextDispatcherInterceptor.java:76) at org.jboss.portal.portlet.invocation.PortletInterceptor.invoke(PortletInterceptor.java:38) at org.jboss.portal.common.invocation.Invocation.invokeNext(Invocation.java:115) at org.jboss.portal.portlet View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4132057#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...