How do I fix IT-R-001?

Invoice Navigator automatically fixes this issue by correcting the `cbc:EndpointID` element in your Invoice. You can also use Invoice Navigator's compliance engine to correct this automatically in your pipeline.

Is IT-R-001 a critical error?

Yes, IT-R-001 is a critical error that will cause invoice rejection. It must be fixed before submission.

Can IT-R-001 be automatically fixed?

Many instances of IT-R-001 can be automatically corrected using Invoice Navigator's compliance engine. The fix is applied in your pipeline with full audit evidence.

errorITACIUS-IT (Italy)

`IT-R-001`:Italian suppliers must have a tax registration identifier (BT-32) between 11...

Italian suppliers must have a tax registration identifier (BT-32) between 11 and 16 characters. This accommodates both Partita IVA (11 digits) and Codice Fiscale (16 characters).

Severity

Fatal

Rule set

CIUS-IT (Italy)

Country

ITA

Fix type

AUTO-FIX

Confidence

80%

Engine Classification

Add Italian fiscal stamp (bollo) charge when required

Confidence: 80% · Applied automatically in pipeline

What is IT-R-001?

IT-R-001 is a fatal validation rule defined in the CIUS-IT (Italy) specification (ITA national rules). It validates the AllowanceChargeReasonCode element in the UBL invoice XML.

When this rule fires, the invoice is non-compliant and will be rejected by Peppol access points and national validation services. The sending system receives a rejection response and the invoice does not reach the buyer.

Target path: //cac:AllowanceCharge[cbc:ChargeIndicator='true']/cbc:AllowanceChargeReasonCode

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Why This Error Matters

Invoice will be rejected by Italian validation. Tax identifier must have correct length for Italian tax system.

IT-R-001 is a hard failure. Invoices that trigger this rule are rejected at the access point and never reach the recipient. In Peppol networks, this means your sending system receives an MLR (Message Level Response) with a rejection status. The invoice must be corrected and re-sent, adding delay to your payment cycle.

Invoice Navigator can automatically correct this error in your pipeline. The fix is applied with full audit evidence, so your compliance trail remains intact.

Validator Behavior

·Causes invoice rejection
·Rejected by SDI (Sistema di Interscambio)
·Error returned: IT-R-001
·Specification: CIUS-IT (Italy)

Before / After

Failing XML

<cac:Party>
  <cbc:EndpointID><!-- invalid or missing value --></cbc:EndpointID>
</cac:Party>

Corrected XML

<cac:Party>
  <cbc:EndpointID>correct-value</cbc:EndpointID>
</cac:Party>

Technical Reference

XPath//cac:AllowanceCharge[cbc:ChargeIndicator='true']/cbc:AllowanceChargeReasonCode

SpecCIUS-IT (Italy)

Operationset_default

StrategyAdd Italian fiscal stamp (bollo) charge when required

Common Causes

·Tax registration too short or too long
·Incomplete tax identifier entered
·Wrong identifier type used
·Extra characters or spaces in identifier
·Mixing different ID formats

Seeing this in production? The API handles IT-R-001 automatically. See the fix response →

Related Errors

BR-DE-16

Seller VAT ID or tax number required

IT-01

Italian sellers should include Codice Fiscale or Partita IVA

IT-02

Italian invoices should include SDI recipient code

Last updated: 27 February 2026

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Handle IT-R-001 Automatically in Your Pipeline

The compliance engine auto-remediates this error with controlled safety policies and evidence pack generation.

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IT-R-001:Italian suppliers must have a tax registration identifier (BT-32) between 11...