What it means
This rule checks the buyer's party block in a UBL invoice or credit note (cac:AccountingCustomerParty, cac:Party). It must not contain cac:PowerOfAttorney, a block that records someone's authority to act for the buyer.
Why it matters
The rule is a warning, so the file is still accepted. The standard has no field for an authorisation like this, so the recipient's software is not expected to read it and may ignore it. Fix it when you can, so the file holds only data the buyer can use.
How to fix it
Check the customer record in your invoicing software for any representative or authorisation details and turn off their export, or ask the supplier to leave them out of the UBL export. If you build the XML yourself, delete cac:PowerOfAttorney from cac:Party under cac:AccountingCustomerParty.
The rule as published
A UBL invoice should not include the AccountingCustomerParty Party PowerOfAttorney 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-260 still fails, and which other rules do.
Related rules
- UBL-CR-261 Leave the buyer's bank account details out
- UBL-CR-262 The invoice should not include a delivery contact for the buyer
- UBL-CR-263 The invoice should not include an accounting contact for the buyer
- UBL-CR-264 The buyer contact must sit in the party's contact element
- UBL-CR-265 The payee should not carry a 'care of' flag
- UBL-CR-266 The payee should not carry an 'attention' flag