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421Estimated Time of Arrival and Car Scheduling

This Draft Standard for Trial Use contains the format and establishes the data contents of the Estimated Time of Arrival and Car Scheduling Transaction Set (421) for use within the context of an Electronic Data Interchange (EDI) environment. This transaction set can be used to allow railroads to exchange car scheduling and estimated time of arrival data between carriers.

  • ST
    Transaction Set Header
    M必须(Mandatory)
    Repeat 1

    To indicate the start of a transaction set and to assign a control number

  • IS1
    Beginning Segment for Estimated Time of Arrival and Car Scheduling
    M必须(Mandatory)
    Repeat 1

    To transmit basic data relating to car scheduling information

  • N9
    Reference Number
    O可选(Optional)
    Repeat 2

    To transmit identifying numbers and descriptive information as specified by the reference number qualifier

  • IS2Loop1Scheduled Events LOOPM必须(Mandatory)Repeat 20
    IS2N8N9F9D9N1S9R2L5H3
    • IS2
      Scheduled Events
      M必须(Mandatory)
      Repeat 1

      To transmit scheduled events such as arrivals, departures, and interchange times

    • N8
      Waybill Reference
      O可选(Optional)
      Repeat 1

      To identify the waybill and to specify the equipment used and the destination details

    • N9
      Reference Number
      O可选(Optional)
      Repeat 2

      To transmit identifying numbers and descriptive information as specified by the reference number qualifier

    • F9
      Origin Station
      O可选(Optional)
      Repeat 1

      To identify the rail origin of this shipment.

    • D9
      Destination Station
      O可选(Optional)
      Repeat 1

      To identify the rail destination of this shipment.

    • N1
      Name
      O可选(Optional)
      Repeat 2

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

    • S9
      Stop-off Station
      O可选(Optional)
      Repeat 5

      To specify location details for a stop-off

    • R2
      Route Information
      O可选(Optional)
      Repeat 13

      To specify carrier and routing sequences and details

    • L5
      Description, Marks and Numbers
      O可选(Optional)
      Repeat 1

      To specify the line item in terms of description, quantity, packaging, and marks and numbers.

    • H3
      Special Handling Instructions
      O可选(Optional)
      Repeat 5

      To specify special handling instructions in coded or free-form format

  • SE
    Transaction Set Trailer
    M必须(Mandatory)
    Repeat 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).

Segment
X12 EDI Release 00304
STTransaction Set Header
To indicate the start of a transaction set and to assign a control number
Elements
  • ST01143Transaction Set Identifier Code
    ID
    M必须(Mandatory)
    Min 3 / Max 3

    Code uniquely identifying a Transaction Set.

    Codes (320)
  • ST02329Transaction Set Control Number
    AN
    M必须(Mandatory)
    Min 4 / Max 9

    Identifying control number that must be unique within the transaction set functional group assigned by the originator for a transaction set

  • ST031705Implementation Convention Preference
    AN
    O可选(Optional)
    Min 1 / Max 9

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