UBL-CR-605:A UBL invoice should not include the InvoiceLine Item ClassifiedTaxCategory...
Fix: Invoice Navigator automatically removes the disallowed `cbc:TaxTypeCode` element from your Invoice (UBL-CR-605). Upload your invoice to fix this automatically.
UBL 2.1 Invoice schema does not include `cac:Item/cac:ClassifiedTaxCategory/cac:TaxScheme/cbc:TaxTypeCode`. 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-605?
UBL-CR-605 is a fatal validation rule defined in the UBL 2.1 specification. It validates the TaxTypeCode element under ClassifiedTaxCategory > TaxScheme 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:Item/cac:ClassifiedTaxCategory/cac:TaxScheme/cbc:TaxTypeCode
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-605 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-605
- ·Specification: UBL 2.1
How to Fix It
Locate the disallowed element
Open your invoice XML and find cbc:TaxTypeCode at /Invoice/cac:InvoiceLine/cac:Item/cac:ClassifiedTaxCategory/cac:TaxScheme/cbc:TaxTypeCode. This element is not permitted in the target e-invoice profile and triggers UBL-CR-605.
Remove cbc:TaxTypeCode
Delete the entire cbc:TaxTypeCode block and its child elements. Invoice Navigator automatically removes the disallowed `cbc:TaxTypeCode` element from your Invoice (UBL-CR-605).
Re-validate your invoice
Upload the corrected invoice to confirm UBL-CR-605 is resolved. If your software consistently adds this element, contact your vendor about their e-invoice export settings.
Before / After
<cac:TaxScheme> <cbc:TaxTypeCode>value</cbc:TaxTypeCode> </cac:TaxScheme>
<cac:TaxScheme> <!-- cbc:TaxTypeCode removed for EN 16931 compliance --> </cac:TaxScheme>
Technical Reference
/Invoice/cac:InvoiceLine/cac:Item/cac:ClassifiedTaxCategory/cac:TaxScheme/cbc:TaxTypeCodeCommon Causes
- ·Invoice line tax scheme contains TaxTypeCode
- ·TaxScheme TaxTypeCode not in EN16931 profile
- ·Tax type code element not permitted at line level
- ·Only VAT scheme ID allowed in ClassifiedTaxCategory
- ·ERP exports non-standard tax type information
Seeing this in production? The API handles UBL-CR-605 automatically. See the fix response →
Frequently Asked Questions
UBL 2.1 Invoice schema does not include `cac:Item/cac:ClassifiedTaxCategory/cac:TaxScheme/cbc:TaxTypeCode`. This element must be removed for EN 16931 compliance.
Invoice Navigator automatically removes the disallowed `cbc:TaxTypeCode` element from your Invoice (UBL-CR-605). You can also use Invoice Navigator's compliance engine to correct this automatically in your pipeline.
Yes, UBL-CR-605 is a critical error that will cause invoice rejection. It must be fixed before submission.
Many instances of UBL-CR-605 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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