The Book From Air Availability (ShortSellLLSRQ) API is used to short sell direct access airline flight segments from an air availability response.

The Build Invoice And Itinerary (InvoiceItineraryLLSRQ) service is used to generate invoices and itineraries.  

The Calculate Air Mileage (MileageLLSRQ) API is used to compute air routing mileage.

The Cancel Itinerary Segments (OTA_CancelLLSRQ) API is used to cancel itinerary segments contained within a passenger name record (PNR).

The Change AAA API (ContextChangeLLSRQ) is used to allow an authorized user application to change AAA, duty codes, or partitions within the Sabre ® host system.

The Create Itinerary (createReservationRQ) API is used to create a Passenger Name Record (PNR) and create an itinerary with tour and rail segments.

The Create Manual Price Quote Ticket Record (ManualPriceQuoteAddInfoLLSRQ) is used to create and modify a Manual PQ ticket record, which is used for manual pricing.

Create Passenger Name Record (CreatePassengerNameRecordRQ) is an orchestrated API that bundles several functions and operations into a single call. This API specifically provides the capability to create a Passenger Name Record (PNR), including air segments, in a single call.