| BookingReferenceID | The PNR record locator for which a ticket was issued.An identifier used to uniquely reference an object in a system (e.g. an airline reservation reference, customer profile reference, booking confirmation number, or a reference to a previous availability quote). |
| Comment | A comment associated with the ticket.Textual information to provide descriptions and/or additional information. |
 Errors | Errors are returned if the request was unable to be processed.A collection of errors that occurred during the processing of a message. |
| QueuePNR | Information to specify which queue a PNR was placed on after the ticket was isssued. |
| Success | The presence of the empty Success element explicitly indicates that the OpenTravel message succeeded.Returning an empty element of this type indicates the successful processing of an OpenTravel message. This is used in conjunction with the Warning Type to report any warnings or business errors. |
 TicketItemInfo | Information for the ticket that was issued. |
| Warnings | Used in conjunction with the Success element to define one or more business errors.Collection of warnings. |
| AltLangID | The alternate language for a customer or message encoded as ISO 639-3. |
| CorrelationID | Allows end-to-end correlation of log messages with the corresponding Web service message throughout the processing of the Web service message. |
| EchoToken | A reference for additional message identification, assigned by the requesting host system. |
| PrimaryLangID | The primary language preference for the message encoded as ISO 639-3. |
| RetransmissionIndicator | When true, indicates the message is being re-sent after a failure. |
| SequenceNmbr | The sequence number of the transaction assigned by the sending system for ordered message processing or message resynchronization. |
| Target | Test or Production target system indicator. |
| TargetName | The name of the Test or Production system. |
| TimeStamp | ISO 8601 encoded timestamp indicating the creation date and time of the message. |
| TransactionIdentifier | Unique identifier to relate all messages within a transaction (e.g. this would be sent in all request and response messages that are part of an on-going transaction). |
| TransactionStatusCode | This indicates where this message falls within a sequence of messages. |
| Version | The OpenTravel message version indicated by a decimal value. |