X12
The North American EDI standard maintained by the Accredited Standards Committee X12, used by most US retailers and healthcare networks.
In practice
X12 transactions are numbered. 850 is a purchase order, 856 is an advance ship notice, 810 is an invoice, 997 is a functional acknowledgment. Implementation guides extend the standard with retailer-specific rules.
Why it matters
Selling into US retail almost always means X12 850/856/810 with retailer-specific overlays.
Related terms
How Sable handles it
Sable parses X12 implementation guides and generates retailer-specific mappings automatically.
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