| Code | Identifies a company by the company code. |
| CodeContext | Identifies the context of the identifying code, such as DUNS, IATA or internal code, etc. |
| CompanyShortName | Used to provide the company common name. |
| CountryCode | The country location of the company headquarters. |
| TravelSector | The travel sector the company is associated with, such as air, car and hotel. Refer to OpenTravel Code List Travel Sector (TVS). |
| 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. |
| ReqRespVersion | Used to request the version of the payload message desired for the response. |