TravlePort api：GTID连接

In Airticket Universal API part I have following request:

<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"> 
     <soapenv:Header/> 
        <soapenv:Body> 
     <air:AirTicketingReq AuthorizedBy="Travelport" BulkTicket="false" ReturnInfoOnFail="true" TargetBranch="*******" TraceId="trace" xmlns:air="http://www.travelport.com/schema/air_v33_0" xmlns:com="http://www.travelport.com/schema/common_v33_0"> 
        <com:BillingPointOfSaleInfo OriginApplication="UAPI"/> 
        <air:AirReservationLocatorCode>K82F4Q</air:AirReservationLocatorCode> 
        </air:AirTicketingReq> 
              </soapenv:Body> 
        </soapenv:Envelope>

and got following error:

<faultstring>Record locator not found.</faultstring>

How can I fix this error?