Oracle Message LPX-01044 - [XQDY0044] Invalid attribute namespace

ERROR[XQDY0044] Invalid attribute namespace
CAUSEIt is a dynamic error if the node-name property of the node constructed by a computed attribute constructor is in the namespace http: //www.w3.org/2000/xmlns/ (corresponding to namespace prefix xmlns), or is in no namespace and has local name xmlns.
ACTIONNone