Question: The prefix "rdf" for attribute "rdf:ID" is not bound.

[Mithun Sheshagiri]

I am publishing a service using the following WSDL description and I get 
the following error:
 org.xml.sax.SAXParseException: The prefix "rdf" for attribute "rdf:ID" 
is not bound.
I have declared rdf in my namespace. What is the problem? Thanks in advance.

mithun
http://www.cs.umbc.edu/~mits1
<?xml version = '1.0' encoding = 'UTF-8'?>
<!--Generated by the Oracle9i JDeveloper Web Services WSDL Generator-->
<!--Date Created: Wed Oct 29 10:35:20 GMT 2003-->
<definitions name="Provider" targetNamespace="http://stuff/Provider.wsdl";
             xmlns="http://schemas.xmlsoap.org/wsdl/";
             xmlns:xsd="http://www.w3.org/2001/XMLSchema";
             xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/";
             xmlns:tns="http://stuff/Provider.wsdl";
             xmlns:ns1="http://stuff/IProvider.xsd";
             xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns";            >
  <types>
    <schema targetNamespace="http://stuff/IProvider.xsd";
            xmlns="http://www.w3.org/2001/XMLSchema";
            xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/";
            >
    <complexType name="ItemList">
      <sequence>
        <element name="member">
          <attribute name="rdf:resource" type="string"/>
        </element>
        <element name="trial" type="string"/>
      </sequence>
      <attribute name="rdf:ID" type="string"/>
    </complexType>
    </schema>
  </types>

  <message name="ItemLookUp0Request">
    <part name="input" type="xsd:string"/>
  </message>
  <message name="ItemLookUp0Response">
    <part name="return" type="ns1:ItemList"/>
  </message>
  <message name="a">
    <part name="a1" type="xsd:string"/>
  </message>
  <message name="b">
    <part name="b1" type="xsd:string"/>
  </message>
  <portType name="ProviderPortType">
    <operation name="ItemLookUp">
      <input name="ItemLookUp0Request" message="tns:ItemLookUp0Request"/>
      <output name="ItemLookUp0Response" 
message="tns:ItemLookUp0Response"/>
    </operation>

    <operation name="test123">
      <input name="a2" message="tns:a"/>
      <output name="b2" message="tns:b"/>
    </operation>
  </portType>
  <binding name="ProviderBinding" type="tns:ProviderPortType">
    <soap:binding style="rpc" 
transport="http://schemas.xmlsoap.org/soap/http"/>
    <operation name="ItemLookUp">
      <soap:operation soapAction="" style="rpc"/>
      <input name="ItemLookUp0Request">
        <soap:body use="encoded" namespace="Provider"

encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"/>
      </input>
      <output name="ItemLookUp0Response">
        <soap:body use="encoded" namespace="Provider"
encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"/>
      </output>
    </operation>
    <operation name="test123">
      <soap:operation soapAction="" style="rpc"/>
      <input name="a2">
        <soap:body use="encoded" namespace="Provider"
encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"/>
      </input>
      <output name="b2">
        <soap:body use="encoded" namespace="Provider"
encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"/>
      </output>
    </operation>
  </binding>
  <service name="ProviderService">
    <port name="Provider" binding="tns:ProviderBinding">
      <soap:address 
location="http://localhost:8080/axis/services/Provider"/>
    </port>
  </service>
</definitions>