If I create a Document by reading it from a String (as in the WS examples) I can add it to a SOAPBody. But if I create the same document programatically I get a NAMESPACE_ERR.
In the example below I created the Document programatically, converted it to a String, and then back to a Document. The second worked, the first did not.

I have changed the version of the XerceImpl.jar, without any difference.

Any advice would be much appreciated. Should I submit a bug?

adding doc from ByteArrayInputStream:
<?xml version="1.0" encoding="UTF-8"?>
<Order><Customer>Kermit</Customer><Item>Ferrari</Item></Order>
adding doc from program:

org.w3c.dom.DOMException: NAMESPACE_ERR: An attempt is made to create or change an object in a way which is incorrect with regard to namespaces.
 at org.apache.xerces.dom.ElementNSImpl.setName(Unknown Source)
 at org.apache.xerces.dom.ElementNSImpl.<init>(Unknown Source)
 at org.apache.xerces.dom.CoreDocumentImpl.createElementNS(Unknown Source)
 at org.jboss.util.xml.DOMUtils.createElement(DOMUtils.java:140)
 at org.jboss.ws.soap.SOAPElementImpl.<init>(SOAPElementImpl.java:79)
 at org.jboss.ws.soap.SOAPFactoryImpl.createElement(SOAPFactoryImpl.java:75)
 at org.jboss.ws.soap.SOAPBodyImpl.addDocument(SOAPBodyImpl.java:82)
 at test.TestNs.<init>(TestNs.java:40)
 at test.TestNs.main(TestNs.java:73)

import java.io.ByteArrayInputStream;
import java.io.StringWriter;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.soap.MessageFactory;
import javax.xml.soap.SOAPBody;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import com.ibm.wsdl.util.xml.DOM2Writer;

public class TestNs {

 public TestNs() {
 try {
 MessageFactory mf = MessageFactory.newInstance();
 SOAPBody body = mf.createMessage().getSOAPBody();
 SOAPBody body2 = mf.createMessage().getSOAPBody();
 DocumentBuilderFactory docBuilderFactory = DocumentBuilderFactory.newInstance();
 docBuilderFactory.setNamespaceAware(true);
 DocumentBuilder builder = docBuilderFactory.newDocumentBuilder();

 Document doc = getDoc();

 StringWriter swr = new StringWriter();
 DOM2Writer.serializeAsXML(doc, swr);
 String xml = swr.toString();

 Document doc2 = builder.parse(new ByteArrayInputStream(xml.getBytes()));

 System.out.println("adding doc from ByteArrayInputStream: \n" + swr);
 body2.addDocument(doc2);

 System.out.println("adding doc from program:\n");
 // NAMESPACE_ERR !
 body.addDocument(doc);

 } catch (Exception e) {
 e.printStackTrace();
 }
 }

 private Document getDoc() {
 try {
 DocumentBuilderFactory docBuilderFactory = DocumentBuilderFactory.newInstance();
 docBuilderFactory.setNamespaceAware(true);
 DocumentBuilder builder = docBuilderFactory.newDocumentBuilder();
 Document root = builder.newDocument();

 Element orderEl = root.createElement("Order");
 root.appendChild(orderEl);

 Element customerEl = root.createElement("Customer");
 orderEl.appendChild(customerEl);
 customerEl.appendChild(root.createTextNode("Kermit"));

 Element itemEl = root.createElement("Item");
 orderEl.appendChild(itemEl);
 itemEl.appendChild(root.createTextNode("Ferrari"));

 return root;
 } catch (Exception e) {
 e.printStackTrace();
 return null;
 }
 }

 public static void main(String[] args) {
 new TestNs();
 }
}