841 Specifications/Technical Information (003030)
This is the standard X12 003030 spec, with 17 loops and 65 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 841 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 841 files into TS841 objects. See ediFabric .NET.
ediFabric Native
Map version 003030 to the Native model with set_map, then parse 841 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 841 classes in Python, Java, Node.js, Go, Rust or C
ediFabric Native returns each 841 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 TS841. 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.
841 structure
Loops and segments of the standard 841, with their usage and maximum repeats.
| ID | Name | Usage | Max use |
|---|---|---|---|
| ST | Transaction Set Header | Optional | 1 |
| Loop SPI | Specification Identifier | Mandatory | >1 |
| SPI | Specification Identifier | Mandatory | 1 |
| RDT | Revision Date/Time | Optional | >1 |
| NTE | Note/Special Instruction | Optional | >1 |
| X1 | Export License | Optional | 1 |
| X2 | Import License | Optional | 1 |
| X7 | Customs Information | Optional | 1 |
| GOV | Military Standard 1840-A Record Definition | Optional | >1 |
| Loop REF | Reference Numbers | Optional | >1 |
| REF | Reference Numbers | Mandatory | 1 |
| DTM | Date/Time Reference | Optional | >1 |
| PER | Administrative Communications Contact | Optional | >1 |
| Loop N1 | Name | Optional | >1 |
| N1 | Name | Mandatory | 1 |
| N2 | Additional Name Information | Optional | 2 |
| N3 | Address Information | Optional | 2 |
| N4 | Geographic Location | Optional | 1 |
| REF | Reference Numbers | Optional | >1 |
| PER | Administrative Communications Contact | Optional | >1 |
| Loop HL | Hierarchical Level | Mandatory | >1 |
| HL | Hierarchical Level | Mandatory | 1 |
| Loop SPI | Specification Identifier | Optional | >1 |
| SPI | Specification Identifier | Mandatory | 1 |
| RDT | Revision Date/Time | Optional | >1 |
| LIN | Item Identification | Optional | 1 |
| N1 | Name | Optional | >1 |
| MSG | Message Text | Optional | >1 |
| Loop PID | Product/Item Description | Optional | >1 |
| PID | Product/Item Description | Mandatory | 1 |
| PKD | Packaging Description | Optional | >1 |
| QTY | Quantity | Optional | >1 |
| MEA | Measurements | Optional | >1 |
| UIT | Unit Detail | Optional | >1 |
| LOC | Location | Optional | 1 |
| PWK | Paperwork | Optional | >1 |
| Loop PKG | Marking, Packaging, Loading | Optional | >1 |
| PKG | Marking, Packaging, Loading | Mandatory | 1 |
| MEA | Measurements | Optional | >1 |
| Loop REF | Reference Numbers | Optional | >1 |
| REF | Reference Numbers | Mandatory | 1 |
| DTM | Date/Time Reference | Optional | >1 |
| PER | Administrative Communications Contact | Optional | >1 |
| Loop LX | Assigned Number | Optional | >1 |
| LX | Assigned Number | Mandatory | 1 |
| MEA | Measurements | Optional | 1 |
| DTM | Date/Time Reference | Optional | >1 |
| REF | Reference Numbers | Optional | >1 |
| Loop EFI | Electronic Format Identification | Optional | >1 |
| EFI | Electronic Format Identification | Mandatory | 1 |
| GOV | Military Standard 1840-A Record Definition | Optional | >1 |
| BIN | Binary Data | Optional | >1 |
| Loop CID | Characteristic/Class ID | Optional | >1 |
| CID | Characteristic/Class ID | Mandatory | 1 |
| UIT | Unit Detail | Optional | 1 |
| TMD | Test Method | Optional | >1 |
| PSD | Physical Sample Description | Optional | 1 |
| CSS | Conditional Sampling Sequence | Optional | 1 |
| SPS | Sampling Parameters for Summary Statistics | Optional | 1 |
| MSG | Message Text | Optional | >1 |
| Loop MEA | Measurements | Optional | >1 |
| MEA | Measurements | Mandatory | 1 |
| DTM | Date/Time Reference | Optional | >1 |
| REF | Reference Numbers | Optional | >1 |
| Loop STA | Statistics | Optional | >1 |
| STA | Statistics | Mandatory | 1 |
| DTM | Date/Time Reference | Optional | >1 |
| REF | Reference Numbers | Optional | >1 |
| Loop CSF | Conditional Sampling Frequency | Optional | >1 |
| CSF | Conditional Sampling Frequency | Mandatory | 1 |
| Loop LS | Loop Header | Optional | 1 |
| LS | Loop Header | Mandatory | 1 |
| Loop CID | Characteristic/Class ID | Optional | >1 |
| CID | Characteristic/Class ID | Mandatory | 1 |
| MEA | Measurements | Optional | 1 |
| STA | Statistics | Optional | 1 |
| LE | Loop Trailer | Mandatory | 1 |
| Loop EFI | Electronic Format Identification | Optional | >1 |
| EFI | Electronic Format Identification | Mandatory | 1 |
| GOV | Military Standard 1840-A Record Definition | Optional | >1 |
| BIN | Binary Data | Optional | >1 |
| SE | Transaction Set Trailer | Optional | 1 |