VariableTypeMismatch

[ratha]

Hi all,
I'm creating a sample loanprocess in ode(common one). Where I have two 
invoke services. So I have created three bpel files and I'm using only 
one wsdl file, where I defined all three port types and bindings.
For the binding operations I use Document/literal binding. So , I have 
created another schema files to define elements and types and one wsdl 
file where i define the 'Messages' for parts.
When i invoke a service it says "/*[VariableTypeMismatch] The variable 
"approval" must be of type "{http://loanProcess}approveResponse"; to be 
used in this context; its actual type is 
"{http://www.example.org/messages/}approveResponse*/";.

Here /*http://loanProcess:- */is my service target name space.
/*http://www.example.org/messages:- */is my messages.wsdl file's target 
name space./*

*/I imported all the files(wsdl and schema) to all bpel files. I dont 
know why above mentioned error occurs? I defined message for 
"approveResponse" at the wsdl file..Is my approach wrong?
Any assistance would be really helpful.

Thanks,
Ratha.

The followingsare my files,

*_Process wsdl file(This my wsdl file using for all services{part of the 
wsdl})
_* <schema xmlns="http://www.w3.org/2001/XMLSchema"; 
attributeFormDefault="unqualified" elementFormDefault="qualified" 
targetNamespace="http://loanProcess";>
<element name="approveResponse">
               <complexType>
                   <sequence>

                       <element name="out" type="string"/>
                   </sequence>
               </complexType>
           </element>
</schema>
       <xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema";>
           <xsd:import namespace="http://www.example.org/elements";
               schemaLocation="elements.xsd">
           </xsd:import>
</xsd:schema>

<message name="approveResponse">
       <part element="xsd:loanApprovalresponse" name="Document" />
   </message>
*_

messages.wsdl file

_*<wsdl:definitions name="messages"
    targetNamespace="http://www.example.org/messages/"; 
xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/";
     xmlns:tns="http://www.example.org/messages/"; 
xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/";
      xmlns:xsd="http://www.w3.org/2001/XMLSchema"; 
xmlns:loan="http://www.example.org/elements";>
    
 <wsdl:types>
   <xsd:schema elementFormDefault="qualified">
           <xsd:import
               namespace="http://www.example.org/elements";
               schemaLocation="elements.xsd">
           </xsd:import>
       </xsd:schema>
 </wsdl:types>

    <wsdl:message name="approveResponse">
   <wsdl:part element="loan:loanApprovalresponse" name="Document"/>
 </wsdl:message>

</wsdl:definitions>


_*elements.xsd file

*_<schema xmlns="http://www.w3.org/2001/XMLSchema";
targetNamespace="http://www.example.org/elements";
xmlns:tns="http://www.example.org/elements"; elementFormDefault="qualified">


   <element name="loanProcessRequest" type="tns:LoanProcessRequest" 
></element>
  
   <complexType name="LoanProcessRequest" >
       <sequence>
           <element name="FirstName">
               <simpleType>
                   <restriction base="string">
                       <minLength value="1"></minLength>
                       <maxLength value="10"></maxLength>
                   </restriction>
               </simpleType>
           </element>
..............................................................................
.............................................................................*_
_*