For using facelets with ADF Faces in jBPM, the file faces-config must have included the FaceletViewHandler in order to interact with task forms of jBPM. My faces-config.xml: <application> | <default-render-kit-id>oracle.adf.core</default-render-kit-id> | <view-handler>com.sun.facelets.FaceletViewHandler</view-handler> | <navigation-handler>org.jbpm.webapp.application.JbpmNavigationHandler</navigation-handler> | </application> That has conflict with the FaceletViewHandler of web.xml <context-param> | <param-name>oracle.adf.view.faces.ALTERNATE_VIEW_HANDLER</param-name> | <param-value>com.sun.facelets.FaceletViewHandler</param-value> | </context-param> How to obvius that FaceletViewHandler of faces-config.xml. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4048709#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...