[ONOS-5764]Decoder is returning Null

Change-Id: I51dabe5a7133df6e5766cb3ed3c36a596936263b
diff --git a/apps/yms/app/src/main/java/org/onosproject/yms/app/ych/defaultcodecs/xml/DefaultXmlCodecWalker.java b/apps/yms/app/src/main/java/org/onosproject/yms/app/ych/defaultcodecs/xml/DefaultXmlCodecWalker.java
index b5a9ea2..11a14ff 100644
--- a/apps/yms/app/src/main/java/org/onosproject/yms/app/ych/defaultcodecs/xml/DefaultXmlCodecWalker.java
+++ b/apps/yms/app/src/main/java/org/onosproject/yms/app/ych/defaultcodecs/xml/DefaultXmlCodecWalker.java
@@ -35,7 +35,10 @@
     public void walk(XmlListener listener, Element element,
                      Element rootElement) {
         try {
-            listener.enterXmlElement(element, getElementType(element),
+            Element newElement = element.createCopy();
+            newElement.remove(element.getNamespace());
+
+            listener.enterXmlElement(element, getElementType(newElement),
                                      rootElement);
 
             if (element.hasContent() && !element.isTextOnly()) {