X12 viewer EDIFACT viewer

EDI Guides

Plain-English explanations of EDI transactions — what they are, how to read them, and how the two big standards compare. No jargon walls. Each guide links to a free viewer so you can try it on a real file.

Getting started

Basics
What is EDI?
The format businesses use to exchange orders, invoices, and shipments — explained from scratch.
 Basics
X12 vs EDIFACT
The two major EDI standards, how they differ, and which transaction maps to which.

ANSI X12 transactions

X12
EDI 850 — Purchase Order
How a buyer sends an order, segment by segment, and what each part means.
 X12
EDI 810 — Invoice
The supplier's bill, how it ties back to the PO, and what AP teams check.
 X12
EDI 856 — ASN
The advance ship notice and its hierarchical shipment / order / item structure.
 X12
EDI 837 — Health Care Claim
How providers bill insurers, and how the 837 connects to the 835 remittance.

UN/EDIFACT messages

EDIFACT
EDIFACT ORDERS
The international purchase order, its UNB/UNH envelope, and key segments.
 EDIFACT
EDIFACT INVOIC
The EDIFACT invoice and how it differs from the X12 810.