Problem Calling a Client Proxy from ABAP which is based on an extension

Question

I'm trying to create an Asset in Salesforce from SAP using ABAP.
I have exported the enterprise WSDL from Salesforce, generated a client proxy and have coded the login call and passed the session id to the create call.
The problem I am having is the create method references sobject however asset is an extension of this.
            <complexType name="Asset">
                <complexContent>
                    <extension base="ens:sObject">
                        <sequence>
                        <element name="Account" nillable="true" minOccurs="0" type="ens:Account"/>
                        <element name="AccountId" nillable="true" minOccurs="0" type="tns:ID"/>
                        <-- many more fields here -->
                        </sequence>
                    </extension>
                </complexContent>
            </complexType>
I need to pass something like this (tested and working using SOAPUI)
         <urn:sObjects xsi:type="urn:Asset"
                   xmlns:ns3="urn:sobject.enterprise.soap.sforce.com">  
               <urn:AccountId>001A000000HoyKZ</urn:AccountId>
               <urn:Name>JWSOAPTEST Asset3</urn:Name>    
                        <-- many more fields here -->
        </urn:sObjects>
I tried modifying the WSDL so sobject referrs to Asset
            <!-- Create Message Types -->
            <element name="create">
                <complexType>
                    <sequence>
                        <!-- element name="sObjects" type="ens:sObject" minOccurs="0" maxOccurs="unbounded" -->
                       <element name="sObjects" type="ens:Asset" minOccurs="0" maxOccurs="unbounded"/>
                    </sequence>
                </complexType>
            </element>
            <element name="createResponse">
                <complexType>
                    <sequence>
                        <element name="result" type="tns:SaveResult" minOccurs="0" maxOccurs="unbounded"/>
                    </sequence>
                </complexType>
            </element>
However other types it referred to weren't populated.
The other approache may be to manually populate the xml similar to what I had to do in the header (this link gives a good overview on this Consume web service in ABAP proxy with SOAP header )
Any recommendations or advice would be appreciated.
  Ideally some sample code if someone has done this or a recommendation on how to modify the WSDL.
Regards,
John

Answer 1

Hi John,
Calling SFDC.com from PI, is detailed out here. probably will give some tips:
http://www.sdn.sap.com/irj/scn/index?rid=/library/uuid/50a76cfa-4966-2d10-aba7-da496d9b5bcf
http://www.sdn.sap.com/irj/scn/index?rid=/library/uuid/802f8d03-9282-2d10-52b4-f9446e077099
Regards, Moorthy