Figure 1: SOAP input message for currency conversion

<soap:Envelope 
      xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
   <soap:Body>
      <ConversionRate xmlns="http://www.webserviceX.NET/">
         <FromCurrency>USD</FromCurrency>
         <ToCurrency>JPY</ToCurrency>
      </ConversionRate>
   </soap:Body>
</soap:Envelope>