PEPPOL-COMMON-R045:Tax Code (Codice Fiscale) must be stated in the correct format
Fix: Italian Tax Code (Codice Fiscale) must follow the correct format. For individuals, this is a 16-character alphanumeric code; for companies, it may be an 11-digit VAT number. Upload your invoice to fix this automatically.
Italian Tax Code (Codice Fiscale) must follow the correct format. For individuals, this is a 16-character alphanumeric code; for companies, it may be an 11-digit VAT number.
Engine Classification
Normalize Italian Codice Fiscale format
Confidence: 85% · Applied automatically in pipeline
What is PEPPOL-COMMON-R045?
PEPPOL-COMMON-R045 is a fatal validation rule defined in the Peppol BIS 3.0 specification. It validates the CompanyID element in the UBL invoice XML.
When this rule fires, the invoice is rejected by Peppol access points and never reaches the buyer.
Target path: //cbc:CompanyID[@schemeID='0210']
Why This Error Matters
Invoice will be rejected by Italian validation. Valid Codice Fiscale is required for tax reporting and identification.
PEPPOL-COMMON-R045 is a hard failure — the invoice must be corrected and re-sent before it can reach the recipient.
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 PEPPOL Access Points
- ·Error returned: PEPPOL-COMMON-R045
- ·Specification: Peppol BIS 3.0
How to Fix It
Find the incorrectly formatted value
Check cbc:CompanyID[@schemeID='0210'] at //cbc:CompanyID[@schemeID='0210']. The current value does not match the required format.
Apply the correct format
Italian Tax Code (Codice Fiscale) must follow the correct format. For individuals, this is a 16-character alphanumeric code; for companies, it may be an 11-digit VAT number.
Update your export settings
If this occurs consistently, check your invoicing software's locale and format settings for XML export. Re-validate to confirm PEPPOL-COMMON-R045 is resolved.
Before / After
<Invoice> <!-- Issue: Italian Codice Fiscale must be 16 alphanumeric characters (p --> </Invoice>
<Invoice> <!-- Issue resolved per Peppol BIS 3.0 --> </Invoice>
Technical Reference
//cbc:CompanyID[@schemeID='0210']Common Causes
- ·Tax code has wrong length
- ·Invalid characters in tax code
- ·Check character is incorrect
- ·Format mixing personal and company styles
- ·Typo in codice fiscale
Seeing this in production? The API handles PEPPOL-COMMON-R045 automatically. See the fix response →
Frequently Asked Questions
Italian Tax Code (Codice Fiscale) must follow the correct format. For individuals, this is a 16-character alphanumeric code; for companies, it may be an 11-digit VAT number.
Italian Tax Code (Codice Fiscale) must follow the correct format. For individuals, this is a 16-character alphanumeric code; for companies, it may be an 11-digit VAT number. You can also use Invoice Navigator's compliance engine to correct this automatically in your pipeline.
Yes, PEPPOL-COMMON-R045 is a critical error that will cause invoice rejection. It must be fixed before submission.
Many instances of PEPPOL-COMMON-R045 can be automatically corrected using Invoice Navigator's compliance engine. The fix is applied in your pipeline with full audit evidence.
Related Content
Last updated: 14 April 2026
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