BR-65:Buyer item identifier should be unique
The Item classification identifier (BT-158) shall have a Scheme identifier.
Engine Classification
Add default item classification scheme identifier
Confidence: 80% · Applied automatically in pipeline
What is BR-65?
BR-65 is a fatal validation rule defined in the EN 16931 specification. It validates the @listID element under CommodityClassification > ItemClassificationCode in the UBL invoice XML.
When this rule fires, the invoice is non-compliant and will be rejected by Peppol access points and national validation services. The sending system receives a rejection response and the invoice does not reach the buyer.
Target path: //cac:InvoiceLine/cac:Item/cac:CommodityClassification/cbc:ItemClassificationCode/@listID
Why This Error Matters
Invoice rejected. Classification schemes enable automated categorization and procurement matching.
BR-65 is a hard failure. Invoices that trigger this rule are rejected at the access point and never reach the recipient. In Peppol networks, this means your sending system receives an MLR (Message Level Response) with a rejection status. The invoice must be corrected and re-sent, adding delay to your payment cycle.
Invoice Navigator can automatically correct this error in your pipeline. The fix is applied with full audit evidence, so your compliance trail remains intact.
Validator Behavior
- ·Causes invoice rejection
- ·Error returned: BR-65
- ·Specification: EN 16931
How to Fix It
Review all lines
Check BuyersItemIdentification/ID values
Make unique
Ensure no duplicates or remove if not needed
Before / After
<Invoice> <!-- Issue: The Item classification identifier (BT-158) shall have a Sch --> </Invoice>
<Invoice> <!-- Issue resolved per EN 16931 --> </Invoice>
Technical Reference
//cac:InvoiceLine/cac:Item/cac:CommodityClassification/cbc:ItemClassificationCode/@listIDCommon Causes
- ·Item classification identifier without scheme identifier
- ·CommodityClassification/ItemClassificationCode missing schemeID
- ·Product category present but scheme not specified
- ·Template missing schemeID on classification code
- ·Classification code exported without identifying scheme
Seeing this in production? The API handles BR-65 automatically. See the fix response →
Frequently Asked Questions
Buyer item identification should be unique per line.
Ensure each buyer item ID is unique across invoice lines. You can also use Invoice Navigator's automatic Fixer tool to correct this instantly.
BR-65 is a warning that may not always cause rejection, but it indicates a potential compliance issue that should be addressed to ensure full compatibility.
Many instances of BR-65 can be automatically corrected using Invoice Navigator's Fixer tool. Upload your invoice and the tool will identify and fix common issues, including buyer item identifier should be unique.
See Also
Related Errors
Last updated: 27 February 2026
Handle BR-65 Automatically in Your Pipeline
The compliance engine auto-remediates this error with controlled safety policies and evidence pack generation.