What it means
In a UBL invoice or credit note, the seller (BG-4) is described under cac:AccountingSupplierParty/cac:Party. This rule checks that this block has no cbc:MarkAttentionIndicator, a true or false flag in the UBL standard. EN 16931 has no field for it.
Why it matters
EN 16931 does not include this attention flag among the seller's party fields.
How to fix it
Remove cbc:MarkAttentionIndicator from cac:AccountingSupplierParty/cac:Party. If your invoicing software adds it, ask your software supplier to leave it out. Export the corrected file and check it again. The same applies to a credit note.
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 AccountingSupplierParty Party MarkAttentionIndicator 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-142 still fails, and which other rules do.
Related rules
- UBL-CR-143 Do not include the seller's website address
- UBL-CR-144 Do not include a logo reference for the seller
- UBL-CR-145 Do not include an industry code for the seller
- UBL-CR-146 Do not include a language for the seller
- UBL-CR-147 Do not include an ID in the seller's address
- UBL-CR-148 Do not include an address type code in the seller's address