841 Specifications/Technical Information (006020)

This is the standard X12 006020 spec, with 18 loops and 76 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.

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The spec as an OpenAPI 3 schema with x-openedi-* extensions, for ediFabric Native, ediFabric Cloud and the EDI Spec Builder. Download OpenEDI (134 KB) Generate classes

The ediFabric .NET template, class TS841. It needs the common segments, composites and codes of X12 006020, one download for every transaction in the version. Download C# (1 KB) Common files (274 KB)

The intermediary model ediFabric Native loads with set_map. Download Native (105 KB)

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 006020 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
AMT	Monetary Amount Information	Optional	>1
Loop REF	Reference Information	Optional	>1
REF	Reference Information	Mandatory	1
DTM	Date/Time Reference	Optional	>1
PER	Administrative Communications Contact	Optional	>1
Loop N1	Party Identification	Optional	>1
N1	Party Identification	Mandatory	1
N2	Additional Name Information	Optional	2
N3	Party Location	Optional	2
N4	Geographic Location	Optional	>1
REF	Reference Information	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
PRR	Problem Report	Optional	>1
PRT	Part Disposition	Optional	>1
PRS	Part Release Status	Optional	1
LIN	Item Identification	Optional	1
PER	Administrative Communications Contact	Optional	>1
MSG	Message Text	Optional	>1
Loop N1	Party Identification	Optional	>1
N1	Party Identification	Mandatory	1
N2	Additional Name Information	Optional	2
N3	Party Location	Optional	2
N4	Geographic Location	Optional	>1
PER	Administrative Communications Contact	Optional	>1
N9	Extended Reference Information	Optional	>1
Loop PID	Product/Item Description	Optional	>1
PID	Product/Item Description	Mandatory	1
PKD	Packaging Description	Optional	>1
QTY	Quantity Information	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 Information	Optional	>1
REF	Reference Information	Mandatory	1
DTM	Date/Time Reference	Optional	>1
PER	Administrative Communications Contact	Optional	>1
Loop LX	Transaction Set Line Number	Optional	>1
LX	Transaction Set Line Number	Mandatory	1
LIN	Item Identification	Optional	1
TMD	Test Method	Optional	1
MEA	Measurements	Mandatory	>1
PSD	Physical Sample Description	Optional	>1
SPS	Sampling Parameters for Summary Statistics	Optional	>1
DTM	Date/Time Reference	Optional	>1
REF	Reference Information	Optional	>1
Loop EFI	Electronic Format Identification	Optional	>1
EFI	Electronic Format Identification	Mandatory	1
BIN	Binary Data Segment	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 Information	Optional	>1
Loop STA	Statistics	Optional	>1
STA	Statistics	Mandatory	1
DTM	Date/Time Reference	Optional	>1
REF	Reference Information	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
BIN	Binary Data Segment	Optional	1
SE	Transaction Set Trailer	Optional	1