PEPPOL-COMMON-R044: Italian IPA code (scheme 0201) has an invalid format

StandardPeppol BIS Billing 3.0 (OpenPeppol)SeverityWarning: the invoice is accepted but should be correctedSyntaxUBL, CIIApplies toInvoices and credit notes sent over the Peppol network (UBL) and, because XRechnung embeds the Peppol rule set, every XRechnung as well.

Official rule text

[PEPPOL-COMMON-R044] IPA Code (Codice Univoco Unità Organizzativa) must be stated in the correct format

Why this error occurs

An identifier with schemeID 0201 is the Codice Univoco Unità Organizzativa (IPA code) that identifies an Italian public administration office; it must match the format defined by IPA (six alphanumeric characters). The rule applies the IPA format check to cbc:EndpointID, cac:PartyIdentification/cbc:ID and cbc:CompanyID with schemeID 0201 (UBL) or ram:URIID, ram:ID, ram:GlobalID with schemeID 0201 (CII) and warns on mismatch. It fires when a Partita IVA (11 digits), a Codice Fiscale or a lowercase code is placed under 0201.

How to fix it

Enter the six-character IPA office code in upper case exactly as published in the Indice delle Pubbliche Amministrazioni, e.g. UFE2OF. For the VAT number use scheme 9906 (IT:VAT) and for the fiscal code scheme 9907 (IT:CF) or 0210 instead. Remove spaces and do not pad the code. This is a warning, but Italian receivers route on the IPA code, so a wrong value means the invoice is not delivered.

Example (valid)

<cbc:EndpointID schemeID="0201">UFE2OF</cbc:EndpointID>

What the validator checks

Checked element (context):

UBL

cbc:EndpointID[@schemeID = '0201'] | cac:PartyIdentification/cbc:ID[@schemeID = '0201'] | cbc:CompanyID[@schemeID = '0201']

Test (XPath):

u:checkCodiceIPA(normalize-space())

CII

ram:URIID[@schemeID = '0201'] | ram:ID[@schemeID = '0201'] | ram:GlobalID[@schemeID = '0201']

Test (XPath):

u:checkCodiceIPA(normalize-space())

Check your invoice

Drop your XML or PDF on the validator and every failed rule is linked to its page here. Free, no account, the file is not stored.

Check your invoice →

Same check via API:

curl -F file=@invoice.xml https://einvoicechecker.com/v1/validate

Related rules

PEPPOL-COMMON-R040 GLN (scheme 0088) has an invalid format
PEPPOL-COMMON-R041 Norwegian organisation number (scheme 0192) has an invalid format
PEPPOL-COMMON-R042 Danish organization number (CVR) MUST be stated in the correct format
PEPPOL-COMMON-R043 Belgian enterprise number (scheme 0208) has an invalid format
PEPPOL-COMMON-R045 Tax Code (Codice Fiscale) must be stated in the correct format
PEPPOL-COMMON-R046 Tax Code (Codice Fiscale) must be stated in the correct format
PEPPOL-COMMON-R047 Italian VAT Code (Partita Iva) must be stated in the correct format
PEPPOL-COMMON-R049 Swedish organisation number (scheme 0007) has an invalid format

Frequently asked questions

What does PEPPOL-COMMON-R044 mean?

PEPPOL-COMMON-R044 is a peppol bis billing 3.0 rule: IPA Code (Codice Univoco Unità Organizzativa) must be stated in the correct format

Will my invoice be rejected because of PEPPOL-COMMON-R044?

No. PEPPOL-COMMON-R044 is a warning: the invoice is accepted but the recipient sees the notice. Fix it anyway, warnings often become errors in later rule versions.

Which formats does PEPPOL-COMMON-R044 apply to?

Invoices and credit notes sent over the Peppol network (UBL) and, because XRechnung embeds the Peppol rule set, every XRechnung as well. Syntax: UBL and CII.

Source: Peppol BIS Billing 3.0.20 (November 2025). Catalogue generated from the official schematron on 2026-10-14.