| ClassCode | The cabin class. Use a value from the enumerated list or enter a string value that is known to your trading partners.Specifies the cabin type (e.g. first, business, economy). |
| ItinerarySegmentRPH | A reference to a unique O/D flight segment ID (defined elsewhere in this message) that associates the O/D flight segment to this cabin class and seat inforamtion. |
| OrigDestSequenceRPH | A reference to a unique O/D pair ID (defined elsewhere in this message) that associates the O/D portion of a trip to this cabin class and seat information. |
| ReqSeatQty | The quantity of requested seats for this cabin type. |
| ResBookDesigCode | Reservation booking designator for the fare.Used for an Alpha String, length 1 to 2 (for letter codes). |
| RPH | A unique ID for this cabin and seat information that may be referenced elsewhere in this message. |
| SeatType | A seat preference type. Use a value from the OpenTravel Seat Type Preference (STP) code list or enter a string value that is known to your trading partners.This type allows either a value from the OpenTravel Seat Preference Type (STP) or a string value. |
| TravelerRPH | A reference to a unique traveler ID (defined elsewhere in this message) that associates the traveler to this cabin class and seat information. |