What it means
When a code is marked with scheme 0201, it must be a correctly formatted IPA code, the code that identifies an office of an Italian public body (Codice Univoco Unità Organizzativa). It is normally six characters, letters and digits. The check applies wherever the scheme is used: in the electronic address (BT-34 or BT-49), in a party identifier (such as BT-29 or BT-46) and in a company registration number (such as BT-30 or BT-47).
Why it matters
Peppol BIS Billing 3.0 requires values marked with scheme 0201 to use the IPA code format.
How to fix it
Look up the office in the IPA index of public administrations (IndicePA) or ask the party the code identifies. Copy it exactly, without spaces. If the identifier is not an IPA code, choose the scheme that fits the identifier you hold.
Once the file is corrected, check it again for free: Validate a Peppol BIS invoice
Or fix the invoice in a form and download the corrected file, for 1 credit: Fix a rejected e-invoice
The rule as published
Read the rule on the publisher's site
Where this rule applies
| Rule set | Version |
|---|---|
| Peppol BIS Billing 3.0 (invoice) | 2026.5 |
| Peppol BIS Billing 3.0 (credit note) | 2026.5 |
Check your file
Drop your e-invoice to see whether PEPPOL-COMMON-R044 still fails, and which other rules do.
Related rules
- PEPPOL-COMMON-R045 An Italian tax number (Codice Fiscale) must be in the correct format
- PEPPOL-COMMON-R046 An Italian tax number in an electronic address must be valid
- PEPPOL-COMMON-R047 An Italian VAT number (partita IVA) must be in the correct format
- PEPPOL-COMMON-R049 A Swedish organisation number must be 10 valid digits
- PEPPOL-COMMON-R050 An Australian ABN must be 11 digits with a valid check
- PEPPOL-COMMON-R052 A Danish chamber of commerce number must be 10 digits