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NCO = New Continuation Info - This type of message happens when your passengers have additional flights after the flight they have with you. For example, they may be flying with your airline into Orlando, Florida. When they reach MCO, they will transfer to another flight on Air Canada.
Unsupported Message Types
Unsupported message types will always show up in your Message interface as UNK. Below are the definitions for the various unknown types.
PDM = Possible Duplicate Message - Sometimes a larger PSS will go down, such as Sabre Galileo or Amadeus. Any messages that have been transmitted or attempted to be transmitted during an outage, could have gotten through or could have been stopped. Since they are uncertain, they precede many of their backed up messages with PDM. This is to ensure that the airline will verify that the message has not been recieved or processed on the reservation already. These messages will go into your GDS Message Interface inbox and are usually marked as an "Unknown Message".
CHNT = Change Name To - These messages are requesting a name change. The old version of the name will be above the CHNT designator and the new version of the name will be Below the CHNT designator. Open the file manually and change the name to process this message. Then change the message type to PNR and the Status to Processed. Once you save the message will disappear.
DVD = Divide Passenger
GDS Message Statuses
RCVD = Received - This is for messages that have not been looked at yet. Any of the previous Types can have this status.
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Example: OSI YY CTCT Demand exceeds availability for booking code H on 2015/08/19 15:25
