<ExchangeEmdRQ
  version="1.4.0"
  xmlns="http://www.sabre.com/ns/Ticketing/ExchangeRefund/1.0"
  xmlns:TTL="http://www.sabre.com/ns/Ticketing/TTL/1.0"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
   xsi:schemaLocation="http://www.sabre.com/ns/Ticketing/ExchangeRefund/1.0 ">
   <POS>
    <TTL:Company>1S</TTL:Company>
    <TTL:Pseudo>1Z1Z</TTL:Pseudo>
   </POS>
   <TransactionInfo requestType="PriceComparison">
    <TicketingDocument>
     <TicketReference>3</TicketReference>
    </TicketingDocument>
    <Reservation>
     <AirExtra>2</AirExtra>
    </Reservation>
   </TransactionInfo>
  </ExchangeEmdRQ>