Here is my page xhtml : <!DOCTYPE composition PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <ui:composition xmlns="http://www.w3.org/1999/xhtml" | xmlns:s="http://jboss.com/products/seam/taglib" | xmlns:ui="http://java.sun.com/jsf/facelets" | xmlns:f="http://java.sun.com/jsf/core" | xmlns:h="http://java.sun.com/jsf/html" | xmlns:a="https://ajax4jsf.dev.java.net/ajax" | xmlns:rich="http://richfaces.ajax4jsf.org/rich" | template="layout/template.xhtml"> | | <ui:define name="body"> | | <h:messages globalOnly="true" styleClass="message" id="globalMessages" /> | | <h:form id="lot" styleClass="edit"> | | <h:panelGrid columns="1" id="grid1" styleClass="table_m" | headerClass="th_m" rowClasses="td_m"> | <f:facet name="header"> | <h:outputText value="#{msgsCommon.editer} #{msgLot.entityName}" /> | </f:facet> | | | | | <s:decorate id="numeroLotDecoration" template="layout/edit.xhtml"> | | <ui:define name="label">#{msgLot.numeroLot}</ui:define> | | | | <h:inputText id="numeroLot" required="true" size="60" | maxlength="60" value="#{lotHome.instance.numeroLot}"> | </h:inputText> | </s:decorate> | | | <s:decorate id="montantDecoration" template="layout/edit.xhtml"> | | <ui:define name="label">#{msgLot.montant}</ui:define> | | <h:inputText id="montant" value="#{lotHome.instance.montant}"> | </h:inputText> | </s:decorate> | | | <s:decorate id="nombreJoursDecoration" template="layout/edit.xhtml"> | | <ui:define name="label">#{msgLot.nombreJours}</ui:define> | | <h:inputText id="nombreJours" | value="#{lotHome.instance.nombreJours}"> | </h:inputText> | </s:decorate> | | | <s:decorate id="dateEcheanceDecoration" template="layout/edit.xhtml"> | | <ui:define name="label">#{msgLot.dateEcheance}</ui:define> | | <h:inputText id="dateEcheance" maxlength="10" size="10" | value="#{lotHome.instance.dateEcheance}"> | <s:convertDateTime pattern="dd/MM/yyyy" /> | </h:inputText> | <s:selectDate for="dateEcheance" dateFormat="dd/MM/yyyy"> | <h:graphicImage url="img/dtpick.gif" style="margin-left:5px" /> | </s:selectDate> | </s:decorate> | | | <s:decorate id="descriptionLotDecoration" | template="layout/edit.xhtml"> | | <ui:define name="label">#{msgLot.descriptionLot}</ui:define> | | | | <h:inputTextarea id="descriptionLot" cols="80" rows="10" | required="true" value="#{lotHome.instance.descriptionLot}" | styleClass="richEditor" /> | </s:decorate> | | | | <div style="clear: both"><span class="required">*</span> | #{msgsCommon.required}</div> | </h:panelGrid> | | <h:panelGrid columns="5" id="gridEdit"> | <s:link id="cancel" propagation="end" | view="/#{empty lotFrom ? 'LotList' : lotFrom}.xhtml" | rendered="#{!lotHome.managed}"> | <h:graphicImage value="/img/house_go.gif" /> | </s:link> | <h:commandButton id="save" action="#{lotHome.persist}" | disabled="#{!lotHome.wired}" rendered="#{!lotHome.managed}" | image="/img/disk.gif"> | </h:commandButton> | <h:commandLink id="update" action="#{lotHome.update}" | rendered="#{lotHome.managed}"> | <h:graphicImage value="/img/disk.gif" /> | </h:commandLink> | <h:commandLink id="delete" action="#{lotHome.remove}" | rendered="#{lotHome.managed}"> | <h:graphicImage value="/img/delete.gif" /> | </h:commandLink> | <s:link id="done" propagation="end" view="/Lot.xhtml" | rendered="#{lotHome.managed}"> | <h:graphicImage value="/img/wrench.gif" /> | </s:link> | </h:panelGrid> | </h:form> | | <rich:tabPanel switchType="ajax"> | | <rich:tab label="#{msgForfait.entityName} *" labelClass="required"> | <h:panelGrid columns="1" styleClass="table_m" headerClass="th_m" | rowClasses="td_m"> | <f:facet name="header"> | <h:outputText value="#{msgForfait.entityName}" /> | </f:facet> | <h:outputText | value="#{msgsCommon.selection} #{msgForfait.entityName}" | rendered="#{lotHome.instance.forfait == null}" /> | | <h:dataTable var="forfait" value="#{lotHome.instance.forfait}" | rendered="#{lotHome.instance.forfait != null}" | styleClass="table_s" columnClasses="table_s" | rowClasses="td1_s,td2_s" headerClass="th_s" | rowOnMouseOver="this.style.backgroundColor='#A5CBFF'" | rowOnMouseOut="this.style.backgroundColor='#FFFFE0'" | rowOnClick="this.style.backgroundColor='#FFE0E0'" | rowOnDblClick="this.style.backgroundColor='#E0E0E0'" | id="forfaitTable"> | <h:column> | <f:facet name="header"> | <h:outputText value="action" /> | </f:facet> | <s:link view="/Forfait.xhtml" id="viewforfait" propagation="none"> | <h:graphicImage value="/img/folder.gif" /> | <f:param name="forfaitForfaitId" value="#{forfait.forfaitId}" /> | </s:link> | </h:column> | <!-- | <h:column> | <f:facet name="header"><h:outputText value="contactClient contactClientId" /></f:facet> | <h:outputText value="#{forfait.contactClient.contactClientId}" /> | </h:column> | --> | <!-- | <h:column> | <f:facet name="header"><h:outputText value="conditionsGenerales conditionsGeneralesId" /></f:facet> | <h:outputText value="#{forfait.conditionsGenerales.conditionsGeneralesId}" /> | </h:column> | --> | <h:column> | <f:facet name="header"> | <h:outputText value="#{msgForfait.numeroAvenant}" /> | </f:facet> | <h:outputText value="#{forfait.numeroAvenant}" /> | </h:column> | <h:column> | <f:facet name="header"> | <h:outputText value="#{msgForfait.numeroCommande}" /> | </f:facet> | <h:outputText value="#{forfait.numeroCommande}" /> | </h:column> | <h:column> | <f:facet name="header"> | <h:outputText value="#{msgForfait.dateSignature}" /> | </f:facet> | <h:outputText value="#{forfait.dateSignature}" /> | </h:column> | <h:column> | <f:facet name="header"> | <h:outputText value="#{msgForfait.montantTotal}" /> | </f:facet> | <h:outputText value="#{forfait.montantTotal}" /> | </h:column> | </h:dataTable> | | | <h:panelGrid columns="1"> | <s:link view="/ForfaitList.xhtml"> | <f:param name="from" value="LotEdit" /> | <h:graphicImage value="/img/wrench.gif" /> | </s:link> | </h:panelGrid> | </h:panelGrid> | </rich:tab> | | <rich:tab label="#{msgCollaborateurAffecte.entityName}"> | | <h:panelGrid columns="1" styleClass="table_m" headerClass="th_m" | rowClasses="td_m" width="100%"> | <f:facet name="header"> | <h:outputText value="#{msgCollaborateurAffecte.entityName}" /> | </f:facet> | | <h:outputText | value="#{msgsCommon.selection} #{msgCollaborateurAffecte.collaborateurAffecte}" /> | | <h:panelGrid columns="5"> | <h:panelGrid columns="1" id="gridDateDebutAffectation"> | <h:outputText | value="#{msgCollaborateurAffecte.dateDebutAffectation}" /> | <h:panelGroup> | <h:inputText id="dateDebutAffectation" size="16" required="true" | value="#{collaborateurAffecteHome.instance.dateDebutAffectation}"> | <s:convertDateTime pattern="dd/MM/yyyy" /> | </h:inputText> | <s:selectDate for="dateDebutAffectation" dateFormat="dd/MM/yyyy"> | <h:graphicImage url="img/dtpick.gif" style="margin-left:5px" /> | </s:selectDate> | </h:panelGroup> | </h:panelGrid> | <h:panelGrid columns="1" id="gridDateFinAffectation"> | <h:outputText | value="#{msgCollaborateurAffecte.dateFinAffectation}" /> | <h:panelGroup> | <h:inputText id="dateFinAffectation" size="16" required="true" | value="#{collaborateurAffecteHome.instance.dateFinAffectation}"> | <s:convertDateTime pattern="dd/MM/yyyy" /> | </h:inputText> | <s:selectDate for="dateFinAffectation" dateFormat="dd/MM/yyyy"> | <h:graphicImage url="img/dtpick.gif" style="margin-left:5px" /> | </s:selectDate> | </h:panelGroup> | </h:panelGrid> | <h:panelGrid columns="1" id="gridSelectOneCollaborateur"> | <h:outputText value="#{msgCollaborateurAffecte.collaborateurs}" /> | <h:panelGroup> | <h:selectOneMenu id="selectOneMenuCollaborateur" | value="#{collaborateurHome.instance}"> | <s:selectItems value="#{societeHome.instance.collaborateurs}" | var="varCollaborateur" label="#{varCollaborateur.nom}" | id="selectItemCollaborateurId" /> | <s:convertEntity /> | </h:selectOneMenu> | </h:panelGroup> | </h:panelGrid> | | <h:panelGrid columns="1" id="gridAVBVNVNNV"> | <h:commandButton id="saveCollaborateurCollaborateurCollab" | action="#{collaborateurAffecteHome.persist}" | disabled="#{!collaborateurAffecteHome.wired}" | rendered="#{!collaborateurAffecteHome.managed}" | image="/img/disk.gif"> | </h:commandButton> </h:panelGrid> | </h:panelGrid> | | <h:outputText | value="#{msgsCommon.selection} #{msgCollaborateurAffecte.entityName}" | rendered="#{empty lotHome.collaborateurAffectes}" /> | | <h:dataTable value="#{lotHome.collaborateurAffectes}" | var="collaborateurAffecte" | rendered="#{not empty lotHome.collaborateurAffectes}" | headerClass="th_s" styleClass="table_s" columnClasses="table_s" | rowClasses="td1_s,td2_s" | rowOnMouseOver="this.style.backgroundColor='#A5CBFF'" | rowOnMouseOut="this.style.backgroundColor='#FFFFE0'" | rowOnClick="this.style.backgroundColor='#FFE0E0'" | rowOnDblClick="this.style.backgroundColor='#E0E0E0'" | id="collaborateurAffectesTable"> | <h:column> | <f:facet name="header"> | <h:outputText value="action" /> | </f:facet> | <s:link view="/CollaborateurAffecte.xhtml" | id="selectcollaborateurAffecte" propagation="none"> | <h:graphicImage value="/img/folder.gif" /> | <f:param name="collaborateurAffecteCollaborateurAffecteId" | value="#{collaborateurAffecte.collaborateurAffecteId}" /> | <f:param name="collaborateurAffecteFrom" value="Lot" /> | </s:link> | </h:column> | | <h:column> | <f:facet name="header"> | <h:outputText | value="#{msgCollaborateurAffecte.dateDebutAffectation}" /> | </f:facet> | <h:outputText | value="#{collaborateurAffecte.dateDebutAffectation}" /> | </h:column> | | <h:column> | <f:facet name="header"> | <h:outputText | value="#{msgCollaborateurAffecte.dateFinAffectation}" /> | </f:facet> | <h:outputText value="#{collaborateurAffecte.dateFinAffectation}" /> | </h:column> | | </h:dataTable> | | <h:panelGrid columns="1" rendered="#{lotHome.managed}" | id="collaborateurAffectes"> | <s:link id="addCollaborateurAffecte" | view="/CollaborateurAffecteEdit.xhtml" propagation="none"> | <h:graphicImage value="/img/user_add.gif" /> | <f:param name="lotLotId" value="#{lotHome.instance.lotId}" /> | <f:param name="collaborateurAffecteFrom" value="Lot" /> | </s:link> | </h:panelGrid> | </h:panelGrid> | </rich:tab> | </rich:tabPanel> | </ui:define> | | </ui:composition> When I add red rows in my page, it displays this errors : Exception during request processing: javax.servlet.ServletException: Client-id : _id5 is duplicated in the faces tree. | javax.faces.webapp.FacesServlet.service(FacesServlet.java:121) | org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252) | org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) | org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:63) | org.jboss.seam.debug.hot.HotDeployFilter.doFilter(HotDeployFilter.java:60) | org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:49) | org.jboss.seam.web.RedirectFilter.doFilter(RedirectFilter.java:45) | org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:49) | org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.java:57) | org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:49) | org.jboss.seam.web.MultipartFilter.doFilter(MultipartFilter.java:79) | org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:49) | org.jboss.seam.web.SeamFilter.doFilter(SeamFilter.java:84) | org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202) | org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) | org.ajax4jsf.framework.ajax.xmlfilter.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:96) | org.ajax4jsf.framework.ajax.xmlfilter.BaseFilter.doFilter(BaseFilter.java:220) | org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202) | org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) | org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96) | org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202) | org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) | org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213) | org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178) | org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:175) | org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:432) | org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:74) | org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126) | org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105) | org.jboss.web.tomcat.tc5.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:156) | org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107) | org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148) | org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869) | org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664) | org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527) | org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112) | java.lang.Thread.run(Unknown Source) View 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