JBoss development, A new message was posted in the thread "Regression moving to JBossXB 2.0.2.Beta5": http://community.jboss.org/message/532711#532711 Author : Alexey Loubyansky Profile : http://community.jboss.org/people/alex.loubyansky@jboss.com Message: -------------------------------------------------------------- The problem is the root element in your testcase is not nillable. If I change the element declaration above to   <xsd:element name='root' nillable='false'>   the nil attribute will be ignored during unmarshalling. The root element creation happens in http://anonsvn.jboss.org/repos/jbossws/stack/native/trunk/modules/core/sr... method bindParameterToElement(SchemaBinding schemaBinding, QName xmlName, QName xmlType) The line is schemaBinding.addElement(xmlName, typeBinding); This will create and return newly created root element. But it's not made nillable by default. Which kind of makes sense as the default, since by default nillable in XSD and binding annotations is false. Can you consider adding a line there to make it nillable? E.g.   ElementBinding e = schemaBinding.addElement(xmlName, typeBinding); e.setNillable(true); -------------------------------------------------------------- To reply to this message visit the message page: http://community.jboss.org/message/532711#532711