421 Estimated Time of Arrival and Car Scheduling (005010)
This is the standard X12 005010 spec, with 4 loops and 37 segment positions, as OpenEDI JSON, an ediFabric C# template and an ediFabric Native model. To change it for a trading partner, customize it in the EDI Spec Builder.
Use the 421 spec in your code
ediFabric .NET
Add the C# template and its common files to your project, or reference the template NuGet package, and read 421 files into TS421 objects. See ediFabric .NET.
ediFabric Native
Map version 005010 to the Native model with set_map, then parse 421 files to JSON from Python, Java, C or C#. See Convert between EDI and JSON.
OpenEDI
Select Customize in Spec Builder to copy the spec under your own name, change it for your partner, and parse files against it in EdiNation, ediFabric Native or ediFabric Cloud. Read about OpenEDI.
Generate 421 classes in Python, Java, Node.js, Go, Rust or C
ediFabric Native returns each 421 as JSON, with the property names of the OpenEDI schema. To work with that JSON as typed objects, generate classes from the OpenEDI file in your language and deserialize the JSON into TS421. Serialize the objects back to JSON to build EDI with ediFabric Native. The classes keep the loops, segments, lengths and code lists, but not the EDI data formats, so validate files with ediFabric Native. Read more in Generate a class from OpenEDI.
Python: datamodel-code-generator. Node.js: openapi-typescript. Java, Go, Rust and C: OpenAPI Generator.
421 structure
Loops and segments of the standard 421, with their usage and maximum repeats.
| ID | Name | Usage | Max use |
|---|---|---|---|
| ST | Transaction Set Header | Optional | 1 |
| IS1 | Estimated Time of Arrival and Car Scheduling | Mandatory | 1 |
| N9 | Extended Reference Information | Mandatory | 5 |
| ISC | Interline Service Commitment Detail | Optional | >1 |
| N8 | Waybill Reference | Optional | 1 |
| IS2 | Scheduled Events | Mandatory | >1 |
| F9 | Origin Station | Optional | 1 |
| D9 | Destination Station | Optional | 1 |
| N1 | Party Identification | Optional | 10 |
| R2 | Route Information | Optional | 13 |
| L5 | Description, Marks and Numbers | Optional | 5 |
| H3 | Special Handling Instructions | Optional | 6 |
| H5 | Car Service Order | Optional | 1 |
| IC | Intermodal Chassis Equipment | Optional | 1 |
| IMA | Interchange Move Authority | Optional | 1 |
| PS | Protective Service Instructions | Optional | 1 |
| REF | Reference Information | Optional | 10 |
| N8A | Additional Reference Information | Optional | 25 |
| Loop S1 | Stop-off Name | Optional | 12 |
| S1 | Stop-off Name | Mandatory | 1 |
| S9 | Stop-off Station | Optional | 1 |
| Loop LS | Loop Header | Optional | 1 |
| LS | Loop Header | Mandatory | 1 |
| Loop LH1 | Hazardous Identification Information | Optional | 1000 |
| LH1 | Hazardous Identification Information | Mandatory | 1 |
| LH2 | Hazardous Classification Information | Optional | 4 |
| LH3 | Hazardous Material Shipping Name Information | Optional | 10 |
| LFH | Free-form Hazardous Material Information | Optional | 20 |
| LEP | EPA Required Data | Optional | 3 |
| LH4 | Canadian Dangerous Requirements | Optional | 4 |
| LHT | Transborder Hazardous Requirements | Optional | 3 |
| LHR | Hazardous Material Identifying Reference Numbers | Optional | 5 |
| PER | Administrative Communications Contact | Optional | 5 |
| Loop N1 | Party Identification | Optional | 10 |
| N1 | Party Identification | Mandatory | 1 |
| N3 | Party Location | Optional | 2 |
| N4 | Geographic Location | Optional | 1 |
| PER | Administrative Communications Contact | Optional | 2 |
| LE | Loop Trailer | Mandatory | 1 |
| PER | Administrative Communications Contact | Optional | 5 |
| SE | Transaction Set Trailer | Optional | 1 |