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Cat 23 – Miscellaneous

Differentials / Mixed Class Travel

360 Fares is designed to apply differentials on consecutive sectors when consecutive sectors within a fare component are travelled in mixed compartments.

In assessing the fare for the mixed class transportation, special fares must not be used.

A class differential (D) is the difference between the lowest class of service used and the lowest applicable fare for the higher class used for such sector.

Category 23 (Miscellaneous Provisions) is used to specify whether a fare is required or may not be used to calculate the differential between two fare classes.

23. MISCELLANEOUS PROVISIONS

UNLESS OTHERWISE SPECIFIED

THIS FARE MUST NOT BE USED AS THE HIGH OR THE LOW FARE

WHEN CALCULATING A DIFFERENTIAL. THIS FARE MAY BE USED AS

THE THROUGH FARE WHEN PRICING A FARE COMPONENT WITH OR

WITHOUT A DIFFERENTIAL

In the absence of data in Category 23 (Record 2 for Category 23 does not exist or no Category 23 Record 3 is applicable within the string) the assumption is that the fare may be used to establish a differential and may be used as the through fare of a fare component with or without a differential

 

Travelport provide two different methods for differential calculations: Method A and Method H. Method H is the default method.

Method H:

The differential is calculated by subtracting the lowest applicable fare in the lower class from the lowest applicable fare in the higher class, over the sector(s) travelled in the higher class. The higher compartment fare candidate used to calculate the differential must pass booking code validation for the higher compartment sector(s).

Method A:

The differential is calculated by subtracting the lowest applicable fare in the lower class from the lowest applicable fare in the higher class, over the sector(s) travelled in the higher class. There is no booking class validation on the higher class sector.

Booking codes on the lower class through fare are always validated regardless of the method used for the differential calculation.

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