SOAP web services

SOAP web services

  
When i execute a SOAP web service i've got an xml output from it like: 
 <GetResponse xmlns="http://www.outsystems.com">
         <List>
            <invoice>
               <SellerDetails>
                  <SellerIdentifier>1</SellelIdentifier>
               </SellerDetails>
            </invoice>
         </List>
Is there any way to change it for 
     <List>
            <invoice extra text here>
               <SellerDetails>
                  <SellerIdentifier extra text here>1</SellelIdentifier>
               </SellerDetails>
            </invoice>
         </List>
 
with the Service Studio?
Nope. Why do you need to make the change?

J.Ja
Hello,
I'm getting a error when posting data to the third party .Please find my error below

<Result xmlns=""><MajorType>Failure</MajorType><MinorType>NoDataProvided</MinorType><ResultMessage>authentication failure</ResultMessage><Errors><Error>CustomerInfoHeader SOAP header is missing</Error></Errors></Result>.

Can anyone suggest what i have to do .I have attached my request file for your reference.