Hi Francesco, Thanks for the response. i found the problem and that is because of the following two lines in application.xml file. *********************************************** <javaee:description>Demo Project</javaee:description> <javaee:display-name>Demo</javaee:display-name> *********************************************** when i removed these two lines, then the deployment was successful. I see these are not as per the xsd that i have mentioned in application.xml file. Also, i see no problem in placing the xxx-ds.xml file in application.xml file. Anyhow, i will move it to jboss-app.xml file as you have suggested. Thanks again for your help. Regards, Sri. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4250195#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...