Zenbridge
EDI Dictionary

EDI 431 Railroad Station Master File

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.

Segments

Position
Segment
Name
Max use
100
ST
Transaction Set Header
Mandatory
AtMax 1
To indicate the start of a transaction set and to assign a control number
200
SMB
Beginning Segment for Railroad Station Master File
Mandatory
AtMax 1
To identify the type of transaction update and type of station
250
DTM
Date/Time Reference
Mandatory
AtMax 10
To specify pertinent dates and times
300
N4
Geographic Location
Mandatory
AtMax 10
To specify the geographic place of the named party
350
REF
Reference Information
Opt
AtMax 10
To specify identifying information
400
SMS
Station Codes Segment
Mandatory
AtMax 1
To identify the specific railroad carrier codes associated with the station
520
N1
Party Identification
Opt
AtMax 10
To identify a party by type of organization, name, and code
600
SMR
Cross Reference
Opt
AtMax 10
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
700
SMO
Operational Services
Opt
AtMax 10
To identify the specific railroad operating facilities and characteristics for the station in the transaction
900
SE
Transaction Set Trailer
Mandatory
AtMax 1
To indicate the end of the transaction set and provide the count of the transmitted segments (including the beginning (ST) and ending (SE) segments)

Elements

PositionElementNameRequirementTypeMin/MaxRepeat
1
143
Transaction Set Identifier CodeMandatoryID3/31
2
329
Transaction Set Control NumberMandatoryAlphanumeric4/91
3
1705
Implementation Convention ReferenceOptAlphanumeric1/351