Uniqueness Constraint Violation When Generating Web Service Proxy

Question

JDeveloper 10.1.3.2 & 10.1.3.3
I'm receiving an error message that a class has already been gerated when attempting to use JDeveloper to create the stubs for a web service from the wsdl & xsd's. The problem seems to center on the declaration for the faults in one xsd file:
=========================
     <!--Faults-->
     <xs:element name="userLookupFault" type="tns:testFaultType"/>
     <xs:element name="testFault" type="tns:testFaultType">
          <xs:annotation>
               <xs:documentation>testFault should be the 'default' fault type for faults that are not categorized
                    into more specific faults.</xs:documentation>
          </xs:annotation>
     </xs:element>
     <xs:complexType name="testFaultType">
          <xs:sequence>
               <xs:element name="message" type="xs:string" nillable="true" minOccurs="0" maxOccurs="1"/>
               <xs:element name="timestamp" type="xs:dateTime" nillable="false" minOccurs="1" maxOccurs="1"/>
          </xs:sequence>
     </xs:complexType>
=========================
Apparently because the userLookupFault and testFault elements are both of type testFaultType JDeveloper attempts to create the testFaultType class twice. I've been able to get the proxy files to generate if I change one of the elements to a different type:
=========================
     <xs:element name="userLookupFault" type="tns:userLookupFaultType"/>
     <xs:complexType name="userLookupFaultType">
          <xs:sequence>
               <xs:element name="message" type="xs:string" nillable="true" minOccurs="0" maxOccurs="1"/>
               <xs:element name="timestamp" type="xs:dateTime" nillable="false" minOccurs="1" maxOccurs="1"/>
          </xs:sequence>
     </xs:complexType>
     <xs:element name="testFault" type="tns:testFaultType" />
     <xs:complexType name="testFaultType">
          <xs:sequence>
               <xs:element name="message" type="xs:string" nillable="true" minOccurs="0" maxOccurs="1"/>
               <xs:element name="timestamp" type="xs:dateTime" nillable="false" minOccurs="1" maxOccurs="1"/>
          </xs:sequence>
     </xs:complexType>
=========================
Upon review I see that the wsdl files that fail to generate attempt to use both userLookupFault and testFault but those that use only one generate successfully.
Has anyone else experienced this issue?
Is there a reason two faults cannot be of the same type?

Answer 1

WSDLs were supplied by third party managing the web service I am attempting to generate the proxies for. I'm unsure of the method used to create the WSDL files.