Hello, I would like to know if the JBoss 5.1.0GA is compatible with the EJB 2.1 specification. I Want to migrate my application from version 4.0.2. I tried to deploy my application on jboss 5 and got this errors: Caused by: org.jboss.xb.binding.JBossXBException: Failed to parse source: cvc-complex-type.2.4.a: Invalid content was found starting with element 'jndi-name'. One of '{"http://java.sun.com/xml/ns/j2ee":ejb-ref-type}' is expected. @ vfszip:/usr/local/java/jboss-5.1.0.GA/server/postgres/deploy/erk-session-1.1-portal.jar/META-INF/ejb-jar.xml[18,16] at org.jboss.xb.binding.parser.sax.SaxJBossXBParser.parse(SaxJBossXBParser.java:203) --- Caused by: org.xml.sax.SAXException: cvc-complex-type.2.4.d: Invalid content was found starting with element 'read-only'. No child element is expected at this point. @ vfszip:/usr/local/java/jboss-5.1.0.GA/server/postgres/deploy/erk-cmp.jar/META-INF/ejb-jar.xml[9316,20] at org.jboss.xb.binding.parser.sax.SaxJBossXBParser$MetaDataErrorHandler.error(SaxJBossXBParser.java:426) Any help will be appreciated. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4247683#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...