FlyerTalk Forums - Award with available segments not bookable? (Married Segment issues)

Married Segment Logic and Effects on Awards

"When selling seats for through flights and the desired inventory is not available, you cannot opt to sell the flight point-to-point. If sold point-to-point, the error response MULTIPLE SEGMENTS FOR SAME FLIGHT - SELL AS ONE SEGMENT will be received, indicating this booking is not allowed. Overriding the error check by ending the PNR twice is not acceptable." Link to FT thread; see wikipost info by JonNYC and hillrider.

"Sometimes when you’re searching for award space... you’ll find that some seats will show as available when you search for them from origin to destination, but when you call to book the flights segment-by-segment, those flights show as unavailable."

"Married segment logic is a tool used by airlines that restricts availability based on origin and destination, rather than by segments."(DCTA, on Boarding Area)

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Married segment logic controls routings based on origin and destination, rather than segment-by-segment availability. Boarding Area

Link to Boarding Area: Sunday Reader Question: What are married segments?

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From Amadeus: Married Segment Control Link

Amadeus Married Segment Control is a revenue maximisation tool that ensures that airline revenue management decisions, made at availability time, are applied throughout the booking process. It prevents agents bypassing availability controls, based on origin and destination (O&D) information. It also improves both load factors and revenue forecasting accuracy.

Key benefits

Ensures more effective forecasting by preventing O&D misuse and matching revenue forecasts with final revenues.
Improves consistency of sales processes by controlling travel agent selling behaviour.
Fully customisable and flexible solution that meets airline unique system requirements.

Link to Worldspan page with extensive information on MSL and coding.