What it means
The rule checks that a document-level cac:InvoicePeriod has no cbc:EndTime. It applies to the invoicing period (BG-14) of the invoice or credit note, not to a line-level period. The end date (BT-74) is held in cbc:EndDate.
Why it matters
EN 16931's UBL rules exclude an end-time element from the document-level invoicing period.
How to fix it
Delete cbc:EndTime inside cac:InvoicePeriod directly under the invoice or credit note root. Keep any correct cbc:EndDate value. If your XML export template writes the end time, remove that element from the template too. Export again and 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 InvoicePeriod EndTime 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-013 still fails, and which other rules do.
Related rules
- UBL-CR-014 The document-level invoicing period should not contain a duration
- UBL-CR-015 The document-level invoicing period should not have a free-text description
- UBL-CR-016 The purchase order reference should not have a copy indicator
- UBL-CR-017 The purchase order reference should not have a UUID
- UBL-CR-018 The purchase order reference should not have an issue date
- UBL-CR-019 The purchase order reference should not have an issue time