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The figure shows the elements and structure of an ADD (ADD) based entity representing an IATA Passenger Assistance List (PAL), Change Assistance List (CAL) and Passenger Service Message (PSM).

PAL and CAL are defined in the Passenger Services Conference Resolutions Manual (PSCRM) Recommended Practice 1708a.
PSM is defined in the Passenger Services Conference Resolutions Manual (PSCRM) Recommended Practice 1715.

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For more mapping information, see: PRM data to ADD data

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Entity / ADD element

PSCRM 1708a
Element No.PSCRM 1715 Comments

Element No.

IataPrmData

IataPrmIdentifier

1.1

FlightId

2.42.4

FlightId

FlightDepartureDate

2.42.4The message contains scheduled departure date for the flight leg, local time. This must be converted to FlightDepartureDate before the service is called.

DepartureAirportIATA

2.42.4

The airport where the passenger boards the aircraft. Boarding point

IataMessagePart

2.42.4

Message part of any number of PRM data for this flight. Special handling for IataMessagePart = 1.

First message is always IataMessagePart = 1.

If IataMessagePart = 1 is received at a later time all information for this flight is to be deleted and replaced with any new information.

SupplementaryInformationText 0..1

2.11PrmDestinationData 1..*

PrmDestinationData represents the destination specific data in the PAL/CAL/PSM message.

SegmentDestinationIATA

There is always at least one destination.

BookingClass

2.52.7

ClearBookingClass

2.52.7"True" : All information related to this booking class shall be deleted. This corresponds to "NIL" in message for the booking class.
"False": Message contains passenger information.