What it means
When an invoice is paid by payment card, it can show the card number (BT-87). In UBL that is cbc:PrimaryAccountNumberID inside cac:CardAccount. EN 16931 treats it as a plain value with no scheme. This rule checks that the element has no schemeID attribute.
Why it matters
This is a warning. The scheme has no matching field in EN 16931. It is worth fixing when your export adds it.
How to fix it
Export again in the standard EN 16931 or Peppol BIS format, and update the software if the attribute is still there. If you build the XML yourself, delete the schemeID attribute from cbc:PrimaryAccountNumberID.
Once the file is corrected, check it again for free: Validate an invoice against EN 16931
Or fix the invoice in a form and download the corrected file, for 1 credit: Fix a rejected e-invoice
The rule as published
A UBL invoice should not include the PrimaryAccountNumberID schemeID Where SI-UBL 2.0 / NLCIUS (invoice), SI-UBL 2.0 / NLCIUS (credit note) run it, the rule reads:
A UBL invoice should not include the PrimaryAccountNumber schemeID Where this rule applies
| Rule set | Version |
|---|---|
| EN 16931 (UBL) | 1.3.17 |
| EN 16931 (UBL credit note) | 1.3.17 |
| XRechnung 3.0 (UBL) | 3.0.2 |
| XRechnung 3.0 (UBL credit note) | 3.0.2 |
| Peppol BIS Billing 3.0 (invoice) | 2026.5 |
| Peppol BIS Billing 3.0 (credit note) | 2026.5 |
| SI-UBL 2.0 / NLCIUS (invoice) | 2.0.3.13 |
| SI-UBL 2.0 / NLCIUS (credit note) | 2.0.3.13 |
| France CTC (UBL invoice) | 1.4.0-04 |
| France CTC (UBL credit note) | 1.4.0-04 |
| CIUS-RO UBL Invoice 1.0.9 | 1.0.9 |
| CIUS-RO UBL Credit Note 1.0.9 | 1.0.9 |
Check your file
Drop your e-invoice to see whether UBL-CR-674 still fails, and which other rules do.
Related rules
- UBL-CR-675 The card network identifier must not have a scheme attribute
- UBL-CR-676 The direct debit mandate reference must not have a scheme
- UBL-CR-677 The account to be debited must not have a scheme attribute
- UBL-CR-678 The VAT category code must have no scheme
- UBL-CR-679 The VAT category code on a line must have no scheme
- UBL-CR-680 Do not add a payer account directly to the payment instructions