What it means
The rule searches the whole file for an attribute called schemeAgencyID. In UBL it can be added to an identifier, such as an electronic address (BT-34, BT-49) or a company registration number (BT-30, BT-47, BT-61), to name the organisation that maintains the identification scheme. EN 16931 and Peppol name the scheme with schemeID instead, so schemeAgencyID should not appear anywhere in the invoice. One occurrence anywhere is enough to trigger the warning.
Why it matters
EN 16931 says you should leave the schemeAgencyID attribute out of UBL invoices and credit notes.
How to fix it
You normally do not set this attribute yourself. Your invoicing software adds it when it writes the file, so look for an export setting or a newer version, or ask the software supplier to stop writing it. If you build the XML yourself, search the file for schemeAgencyID and delete only that attribute, then check the file again. Keep schemeID where the identifier needs it. It is worth fixing the next time you change your export, and sooner if a recipient asks for a file without warnings.
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
Scheme Agency ID attribute should not be present 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-DT-27 still fails, and which other rules do.
Related rules
- UBL-DT-28 Leave the listAgencyID attribute out of the invoice
- UBL-DT-26 Leave the encodingCode attribute out of the invoice
- UBL-DT-25 Leave the characterSetCode attribute out of the invoice
- UBL-DT-24 Leave out the currencyCodeListVersionID attribute
- UBL-DT-23 Leave out the uri attribute
- UBL-DT-22 Leave out the languageLocaleID attribute