Getting the current state of the booking without synchronizing with the supplier. Getting information is possible using BookID and using PNRParams, see examples.
The latest request version, the differences are only in the response in the ancillary services block from Book_2_2 request.
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:avia="http://ws-ibe.com/Avia" xmlns:stl="http://ws-ibe.com/STL" xmlns:avia1="http://websky.travel/Avia" xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ns1="http://websky-ibe.com/STL" xmlns:ns2="http://websky-ibe.com/Avia">
<soapenv:Header/>
<soapenv:Body>
<avia:GetBook_2_2>
<avia:Request>
<stl:Requisites>
<stl:AuthToken>token</stl:AuthToken>
</stl:Requisites>
<stl:UserID>11111</stl:UserID>
<stl:RequestType>P</stl:RequestType>
<stl:RequestBody>
<avia:BookID>112209</avia:BookID>
</stl:RequestBody>
</avia:Request>
</avia:GetBook_2_2>
</soapenv:Body>
</soapenv:Envelope>Sample with PNRParams assums the use of BookID=0.
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:avia="http://ws-ibe.com/Avia" xmlns:stl="http://ws-ibe.com/STL" xmlns:avia1="http://websky.travel/Avia" xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ns1="http://websky-ibe.com/STL" xmlns:ns2="http://websky-ibe.com/Avia">
<soapenv:Header/>
<soapenv:Body>
<avia:GetBook_2_2>
<avia:Request>
<stl:Requisites>
<stl:AuthToken>token</stl:AuthToken>
</stl:Requisites>
<stl:UserID>11111</stl:UserID>
<stl:RequestType>P</stl:RequestType>
<stl:RequestBody>
<avia:BookID>112209</avia:BookID>
<avia1:PNRParams>
<avia1:Locator>ADBCEF</avia1:Locator>
<avia1:Supplier>Sabre</avia1:Supplier>
<avia1:SourceId>-11111</avia1:SourceId>
</avia1:PNRParams>
</stl:RequestBody>
</avia:Request>
</avia:GetBook_2_2>
</soapenv:Body>
</soapenv:Envelope><?xml version="1.0"?>
<s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/">
<s:Body>
<GetBook_2_2Response xmlns="http://ws-ibe.com/Avia">
<GetBook_2_2Result xmlns:a="http://ws-ibe.com/STL" xmlns:i="http://www.w3.org/2001/XMLSchema-instance">
<a:RequestID>107663509</a:RequestID>
<a:ResponseBody>
<a:ID>112209</a:ID>
<a:OwnerID>30328</a:OwnerID>
<a:DateInfo>
<a:Created>2017-08-22 16:54:41 05:00</a:Created>
<a:LastUpdate>2017-08-22 16:59:49 05:00</a:LastUpdate>
<a:Ticketed>2017-08-22 16:56:55 05:00</a:Ticketed>
<a:Voided>2017-08-22 16:59:46 05:00</a:Voided>
</a:DateInfo>
<a:PossibleActions>
<a:Action>Get</a:Action>
<a:Action>Update</a:Action>
<a:Action>GetHistory</a:Action>
<a:Action>Ticket</a:Action>
<a:Action>Modify</a:Action>
<a:Action>Cancel</a:Action>
<a:Action>GetPNRTerminalView</a:Action>
</a:PossibleActions>
<a:Travellers>
<a:Traveller>
<a:ID>1</a:ID>
<a:IDInPNR>2</a:IDInPNR>
<a:Type>ADT</a:Type>
<a:NamePrefix>MR</a:NamePrefix>
<a:Name>ALEX</a:Name>
<a:LastName>BROWN</a:LastName>
<a:DateOfBirth>11.11.1991</a:DateOfBirth>
<a:Nationality>US</a:Nationality>
<a:Gender>M</a:Gender>
</a:Traveller>
</a:Travellers>
<a:Services>
<a:Service i:type="a:FlightService">
<a:ID>0</a:ID>
<a:SupplierID>ABBCCDD</a:SupplierID>
<a:Status>Booked</a:Status>
<a:SubStatus/>
<a:Type>Regular</a:Type>
<a:DirectionType>OW</a:DirectionType>
<a:Segments>
<a:FlightSegment>
<a:ID>0</a:ID>
<a:DepatureAirport>
<a:Code>PAR</a:Code>
<a:CityCode>PAR</a:CityCode>
<a:UTC>5</a:UTC>
</a:DepatureAirport>
<a:ArrivalAirport>
<a:Code>HEL</a:Code>
<a:SubPointCode>2</a:SubPointCode>
<a:CityCode>HEL</a:CityCode>
<a:UTC>3</a:UTC>
</a:ArrivalAirport>
<a:DepatureDateTime>2017-09-08T11:50:00</a:DepatureDateTime>
<a:ArrivalDateTime>2017-09-08T13:30:00</a:ArrivalDateTime>
<a:FlightNumber>154</a:FlightNumber>
<a:AircraftType>747</a:AircraftType>
<a:OperatingAirline>AY</a:OperatingAirline>
<a:MarketingAirline>AY</a:MarketingAirline>
<a:ETicket>true</a:ETicket>
<a:BookingClassCode>S</a:BookingClassCode>
<a:Status>Confirmed</a:Status>
<a:StatusCode>HK</a:StatusCode>
<a:SupplierRef>ABCDEF</a:SupplierRef>
<a:RequestedSegment>0</a:RequestedSegment>
</a:FlightSegment>
</a:Segments>
</a:Service>
</a:Services>
<a:Price>
<a:TotalPrice>
<a:Amount>25</a:Amount>
<a:Currency>EUR</a:Currency>
</a:TotalPrice>
<a:PriceBreakdown>
<a:PricePart>
<a:ServiceRef>
<a:Ref>0</a:Ref>
</a:ServiceRef>
<a:TotalPrice>
<a:Amount>25</a:Amount>
<a:Currency>EUR</a:Currency>
</a:TotalPrice>
<a:ValidatingCompany>AY</a:ValidatingCompany>
<a:Refundable>Refundable</a:Refundable>
<a:PassengerTypePriceBreakdown>
<a:PassengerTypePrice>
<a:TravellerRef>
<a:Ref>1</a:Ref>
</a:TravellerRef>
<a:PricingType>ADT</a:PricingType>
<a:BaseFare>
<a:Amount>10</a:Amount>
<a:Currency>EUR</a:Currency>
</a:BaseFare>
<a:EquiveFare>
<a:Amount>10</a:Amount>
<a:Currency>EUR</a:Currency>
</a:EquiveFare>
<a:TotalFare>
<a:Amount>25</a:Amount>
<a:Currency>EUR</a:Currency>
</a:TotalFare>
<a:Taxes>
<a:Tax>
<a:Amount>5</a:Amount>
<a:Currency>EUR</a:Currency>
<a:TaxCode>YR</a:TaxCode>
<a:Type>X</a:Type>
</a:Tax>
<a:Tax>
<a:Amount>5</a:Amount>
<a:Currency>EUR</a:Currency>
<a:TaxCode>RI</a:TaxCode>
<a:Type>X</a:Type>
</a:Tax>
<a:Tax>
<a:Amount>5</a:Amount>
<a:Currency>EUR</a:Currency>
<a:TaxCode>UH</a:TaxCode>
<a:Type>X</a:Type>
</a:Tax>
</a:Taxes>
<a:Tariffs>
<a:Tariff i:type="a:AirTariff">
<a:Code>SVA0RU</a:Code>
<a:Type>Public</a:Type>
<a:ClassOfService>Economy</a:ClassOfService>
<a:BookingClassCode>S</a:BookingClassCode>
<a:SegmentID>0</a:SegmentID>
<a:FreeBaggage>
<a:Value>1</a:Value>
<a:Measure>Pieces</a:Measure>
</a:FreeBaggage>
<a:FareFamilyCode>VALUE</a:FareFamilyCode>
</a:Tariff>
</a:Tariffs>
<a:FareCalc>Text</a:FareCalc>
</a:PassengerTypePrice>
</a:PassengerTypePriceBreakdown>
</a:PricePart>
</a:PriceBreakdown>
</a:Price>
<a:DataItems />
</a:ResponseBody>
</GetBook_2_2Result>
</GetBook_2_2Response>
</s:Body>
</s:Envelope>