What it means
This rule checks the delivery address (BG-15) and warns if it contains an in-house mail element (cbc:InhouseMail inside cac:Delivery/cac:DeliveryLocation/cac:Address). This is an internal mail code or mail point inside a building. EN 16931 has no separate field for it. The check applies to invoices and credit notes.
Why it matters
EN 16931 does not use a separate in-house mail element in the delivery address.
How to fix it
Look at the delivery address in your invoicing software and check whether an internal mail code is exported in a separate element. If the buyer needs it, add it to an extra address line. Otherwise leave it out. If you build the XML yourself, delete cbc:InhouseMail from cac:Delivery/cac:DeliveryLocation/cac:Address and move the text into cbc:AdditionalStreetName in the same address if you keep it. Recheck the corrected 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 Delivery DeliveryLocation Address InhouseMail 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-368 still fails, and which other rules do.
Related rules
- UBL-CR-369 No department element in the delivery address
- UBL-CR-370 No 'for the attention of' element in the delivery address
- UBL-CR-371 No 'care of' element in the delivery address
- UBL-CR-372 No plot identification element in the delivery address
- UBL-CR-373 No city subdivision element in the delivery address
- UBL-CR-374 No country subdivision code in the delivery address