423 Rail Industrial Switch List (004050)
This is the standard X12 004050 spec, with 5 loops and 41 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 423 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 423 files into TS423 objects. See ediFabric .NET.
ediFabric Native
Map version 004050 to the Native model with set_map, then parse 423 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 423 classes in Python, Java, Node.js, Go, Rust or C
ediFabric Native returns each 423 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 TS423. 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.
423 structure
Loops and segments of the standard 423, with their usage and maximum repeats.
| ID | Name | Usage | Max use |
|---|---|---|---|
| ST | Transaction Set Header | Optional | 1 |
| BGN | Beginning Segment | Mandatory | 1 |
| DTM | Date/Time Reference | Optional | 3 |
| LQ | Industry Code Identification | Optional | 1 |
| QTY | Quantity Information | Optional | 3 |
| Loop N1 | Party Identification | Mandatory | 5 |
| N1 | Party Identification | Mandatory | 1 |
| N2 | Additional Name Information | Optional | 1 |
| N3 | Party Location | Optional | 1 |
| N4 | Geographic Location | Optional | 1 |
| PER | Administrative Communications Contact | Optional | 1 |
| Loop LX | Transaction Set Line Number | Optional | 150 |
| LX | Transaction Set Line Number | Mandatory | 1 |
| XD | Placement/Pull Data | Optional | 1 |
| Loop N7 | Equipment Details | Optional | 500 |
| N7 | Equipment Details | Mandatory | 1 |
| YNQ | Yes/No Question | Optional | 10 |
| DTM | Date/Time Reference | Optional | 10 |
| XD | Placement/Pull Data | Optional | 1 |
| R2 | Route Information | Optional | 1 |
| N1 | Party Identification | Optional | 1 |
| N4 | Geographic Location | Optional | 1 |
| L5 | Description, Marks and Numbers | Optional | 5 |
| D9 | Destination Station | Optional | 1 |
| F9 | Origin Station | Optional | 1 |
| PER | Administrative Communications Contact | Optional | 2 |
| LH2 | Hazardous Classification Information | Optional | 2 |
| LH6 | Hazardous Certification | Optional | 6 |
| QTY | Quantity Information | Optional | 2 |
| N9 | Extended Reference Information | Optional | 10 |
| Loop LH1 | Hazardous Identification Information | Optional | 1000 |
| LH1 | Hazardous Identification Information | Mandatory | 1 |
| LH2 | Hazardous Classification Information | Optional | 4 |
| LH3 | Hazardous Material Shipping Name | Optional | 10 |
| LFH | Freeform Hazardous Material Information | Optional | 20 |
| LEP | EPA Required Data | Optional | 3 |
| LH4 | Canadian Dangerous Requirements | Optional | 1 |
| 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 |
| SE | Transaction Set Trailer | Optional | 1 |