What it means
The rule warns if cac:DocumentReference inside cac:InvoiceLine or cac:CreditNoteLine contains cbc:CopyIndicator, a yes or no flag saying whether the referenced document is a copy. It does not check the invoiced object identifier (BT-128) in cbc:ID or the document type code 130 in cbc:DocumentTypeCode.
Why it matters
The standard has no field for a copy flag on a line reference. It is worth fixing when you want a file that passes without warnings.
How to fix it
Open the line in your invoicing software and look at its object or document reference fields. Keep the identifier and clear any copy option. In the XML, delete cbc:CopyIndicator from cac:DocumentReference inside cac:InvoiceLine (cac:CreditNoteLine in a credit note). Recheck the file.
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 InvoiceLine DocumentReference CopyIndicator 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-532 still fails, and which other rules do.
Related rules
- UBL-CR-533 A line document reference should not carry a UUID
- UBL-CR-534 A line document reference should not carry an issue date
- UBL-CR-535 A line document reference should not carry an issue time
- UBL-CR-537 A line document reference should not carry a text document type
- UBL-CR-538 A line document reference should not carry an XPath
- UBL-CR-539 A line document reference should not carry a language