UBL-CR-639:A UBL invoice should not include the InvoiceLine Item Price AllowanceCharge...
Fix: Invoice Navigator automatically removes the disallowed `cbc:AccountingCost` element from your Invoice (UBL-CR-639). Upload your invoice to fix this automatically.
UBL 2.1 Invoice schema does not include `cac:Price/cac:AllowanceCharge/cbc:AccountingCost`. This element must be removed for EN 16931 compliance.
Engine Classification
Remove disallowed UBL element per EN16931 specification
Confidence: 95% · Applied automatically in pipeline
What is UBL-CR-639?
UBL-CR-639 is a fatal validation rule defined in the UBL 2.1 specification. It validates the AccountingCost element under Price > AllowanceCharge in the UBL invoice XML.
When this rule fires, the invoice is rejected by Peppol access points and never reaches the buyer.
Target path: /Invoice/cac:InvoiceLine/cac:Price/cac:AllowanceCharge/cbc:AccountingCost
Why This Error Matters
Invoice will be rejected by EN16931 validators. These conformance rules prohibit UBL elements that are not part of the EN16931 e-invoicing profile. Remove the disallowed element.
UBL-CR-639 is a hard failure — the invoice must be corrected and re-sent before it can reach the recipient.
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
- ·Fails UBL schema validation
- ·Error returned: UBL-CR-639
- ·Specification: UBL 2.1
How to Fix It
Locate the disallowed element
Open your invoice XML and find cbc:AccountingCost at /Invoice/cac:InvoiceLine/cac:Price/cac:AllowanceCharge/cbc:AccountingCost. This element is not permitted in the target e-invoice profile and triggers UBL-CR-639.
Remove cbc:AccountingCost
Delete the entire cbc:AccountingCost block and its child elements. Invoice Navigator automatically removes the disallowed `cbc:AccountingCost` element from your Invoice (UBL-CR-639).
Re-validate your invoice
Upload the corrected invoice to confirm UBL-CR-639 is resolved. If your software consistently adds this element, contact your vendor about their e-invoice export settings.
Before / After
<cac:AllowanceCharge> <cbc:AccountingCost>value</cbc:AccountingCost> </cac:AllowanceCharge>
<cac:AllowanceCharge> <!-- cbc:AccountingCost removed for EN 16931 compliance --> </cac:AllowanceCharge>
Technical Reference
/Invoice/cac:InvoiceLine/cac:Price/cac:AllowanceCharge/cbc:AccountingCostCommon Causes
- ·Invoice line price allowance contains accounting cost
- ·Price AllowanceCharge AccountingCost not permitted
- ·Cost description in price not in EN16931
- ·Accounting info not needed in price structure
- ·ERP exports accounting descriptions in price allowance
Seeing this in production? The API handles UBL-CR-639 automatically. See the fix response →
Frequently Asked Questions
UBL 2.1 Invoice schema does not include `cac:Price/cac:AllowanceCharge/cbc:AccountingCost`. This element must be removed for EN 16931 compliance.
Invoice Navigator automatically removes the disallowed `cbc:AccountingCost` element from your Invoice (UBL-CR-639). You can also use Invoice Navigator's compliance engine to correct this automatically in your pipeline.
Yes, UBL-CR-639 is a critical error that will cause invoice rejection. It must be fixed before submission.
Many instances of UBL-CR-639 can be automatically corrected using Invoice Navigator's compliance engine. The fix is applied in your pipeline with full audit evidence.
Last updated: 14 April 2026
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