EDI 431 Railroad Station Master File

Functional Group RM

X12I Transportation Subcommittee

This X12 Transaction Set provides the format and establishes the data contents of the Railroad Station Master File Transaction Set (431) for use within the context of an Electronic Data Interchange (EDI) environment. The transaction set will be used by the Association of American Railroads (AAR) and the rail carriers to apply and disseminate information concerning the railroad stations. Rail carriers report to the AAR the addition or deletion of, or changes to, the list of stations they serve as updates to the centrally maintained master file. The AAR in turn provides all updates to the rail carriers and other subscribers to the system.


Max use
  1. To indicate the start of a transaction set and to assign a control number

  2. To identify the type of transaction update and type of station

  3. To specify pertinent dates and times

  4. To specify the geographic place of the named party

  5. To specify identifying information

  6. To identify the specific railroad carrier codes associated with the station

  7. To identify a party by type of organization, name, and code

  8. To identify the specific station that indicates the switching district for a given railroad terminal or the specific station used to identify a geographical location as a rate base location

  9. To identify the specific railroad operating facilities and characteristics for the station in the transaction

  10. To indicate the end of the transaction set and provide the count of the transmitted segments (including the beginning (ST) and ending (SE) segments)

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