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Invoice Document Type Codes: UNTDID 1001, X12 and EDIFACT Reference

Document AI that extracts invoices has to decide whether a page is an invoice, a credit note or a proforma, because each one posts differently. This table lists the standard type codes and the matching EDI messages in one place.

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Standard	Code	Name	Typical use in AP and purchasing
UNTDID 1001	380	Commercial invoice	Standard supplier invoice; the default type in e-invoicing formats
UNTDID 1001	381	Credit note	Reduces the amount owed, for returns or price corrections
UNTDID 1001	383	Debit note	Increases the amount owed after an original invoice
UNTDID 1001	384	Corrected invoice	Replaces an earlier invoice with corrected data
UNTDID 1001	386	Prepayment invoice	Invoice for an advance payment before delivery
UNTDID 1001	389	Self-billed invoice	Invoice raised by the buyer on behalf of the supplier
UNTDID 1001	325	Proforma invoice	Preliminary invoice for customs or prepayment, not a payment demand
UNTDID 1001	326	Partial invoice	Invoice for part of the goods or services
UNTDID 1001	393	Factored invoice	Invoice assigned to a factoring company that must be paid to the factor
UNTDID 1001	751	Invoice information for accounting purposes	Information copy, not a payment request
ASC X12	810	Invoice	Electronic supplier invoice in North American EDI
ASC X12	812	Credit/Debit Adjustment	Adjusts a prior invoice amount
ASC X12	820	Payment Order/Remittance Advice	Payment and remittance detail from buyer to supplier
ASC X12	824	Application Advice	Reports acceptance or rejection of a business document at application level
ASC X12	850	Purchase Order	Order from buyer; first leg of three way match
ASC X12	855	Purchase Order Acknowledgment	Supplier confirms or changes the order
ASC X12	856	Ship Notice/Manifest	Advance ship notice (ASN) sent by the supplier
ASC X12	860	Purchase Order Change Request - Buyer Initiated	Buyer changes an open order
ASC X12	861	Receiving Advice/Acceptance Certificate	Buyer confirms receipt; supports evaluated receipt settlement
ASC X12	865	Purchase Order Change Acknowledgment/Request - Seller Initiated	Seller proposes or confirms order changes
ASC X12	997	Functional Acknowledgment	Confirms an EDI interchange was received and syntactically accepted
UN/EDIFACT	INVOIC	Invoice message	EDIFACT equivalent of X12 810, includes credit notes by type code
UN/EDIFACT	ORDERS	Purchase order message	EDIFACT equivalent of X12 850
UN/EDIFACT	ORDRSP	Purchase order response message	EDIFACT equivalent of X12 855
UN/EDIFACT	DESADV	Despatch advice message	EDIFACT equivalent of X12 856 ship notice
UN/EDIFACT	RECADV	Receiving advice message	EDIFACT equivalent of X12 861
UN/EDIFACT	REMADV	Remittance advice message	EDIFACT equivalent of X12 820 remittance detail

Code lists are maintained by UN/CEFACT, ASC X12 and trading partner agreements. Partners may restrict the subset they accept, so check the implementation guide your partner or e-invoicing network publishes.

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How to use this table

Search for the code that appears in a customer or supplier file, or the document name you want to classify. Use the UNTDID 1001 rows to map your OCR classification labels to standard codes, so that scanned PDFs and e-invoices end up with the same type values in your ERP. Use the X12 and EDIFACT rows to see which message belongs to which step of the order to cash or procure to pay flow.

Why the type code matters for posting

A credit note must reverse the original posting, a prepayment invoice usually creates a down payment rather than a payable for goods, and a proforma should not be paid at all. If your classifier treats every document as a standard invoice, a credit note may be posted as a new payable. Add the type to your extraction output and route anything other than a standard invoice through its own approval path.

380: normal payable posting
381: reverse or offset the original invoice
384: replace the earlier invoice, avoid double posting
386: down payment handling
325: do not post, hold for the final invoice

Mapping to the three way match

In a typical flow the purchase order (850 or ORDERS), the ship notice (856 or DESADV), the receiving advice (861 or RECADV) and the invoice (810 or INVOIC) are compared. Keeping the codes together helps when you design the document links that a matching rule needs to look up in your ERP.

Common mistakes

Do not assume a document with the word Credit anywhere on it is a credit note, since terms and conditions often contain the word. Another error is treating a corrected invoice as a new one, which causes duplicate payments. Always carry the reference to the original invoice number for types 381 and 384.

Frequently Asked Questions

What does invoice type code 380 mean?

Code 380 in UNTDID 1001 is a commercial invoice, the ordinary request for payment for goods or services. It is the default in many e-invoicing formats, including Peppol BIS Billing, where 381 is used for credit notes.

What is the difference between 381 and 383?

381 is a credit note, which reduces the amount the buyer owes. 383 is a debit note, which increases it, for example when a supplier adds charges after the original invoice was issued.

Is X12 810 the same as EDIFACT INVOIC?

They serve the same purpose, an electronic invoice, but belong to different standards with different segment structures. 810 is used mostly in North America, INVOIC in Europe and by many global trading partners.

Should proforma invoices be posted in AP?

Normally not. A proforma invoice (325) is a preliminary document, often used for customs or prepayment. Hold it for approval and post only the final tax invoice unless your prepayment process says otherwise.

If you want document classification and posting rules built around your ERP, Netray can design them to run privately on your own systems.

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