BR-PT-01:Portuguese NIF required
Fix: Add Portuguese NIF with PT prefix. Provide the required value in the free validator.
Portuguese invoices must include the 9-digit NIF (tax number).
Engine Classification
Business data required · Explicit input workflow · No assumptions made
Required input: Portuguese NIF
What is BR-PT-01?
BR-PT-01 is a fatal validation rule defined in the peppol-bis-3 specification (PRT national rules). It validates the CompanyID element under Party > PartyTaxScheme in the UBL invoice XML.
When this rule fires, the invoice is rejected by Peppol access points and never reaches the buyer.
Target path: XPath: /Invoice/cac:AccountingSupplierParty/cac:Party/cac:PartyTaxScheme/cbc:CompanyID
Why This Error Matters
Portuguese NIF is required for all B2B invoicing in Portugal.
BR-PT-01 is a hard failure — the invoice must be corrected and re-sent before it can reach the recipient.
Validator Behavior
- ·Causes invoice rejection
- ·Rejected by PEPPOL Access Points
- ·Error returned: BR-PT-01
- ·Specification: peppol-bis-3
How to Fix It
Get NIF
9-digit Portuguese tax number
Add PT prefix
Format: PT + 9 digits
Validate checksum
NIF has control digit
XML Example
Generic example based on the rule's target XPath. Your actual XML structure may differ.
<!-- Missing or empty element triggers cbc:CompanyID error --> <cbc:CompanyID></cbc:CompanyID>
<!-- Provide the required value --> <cbc:CompanyID>VALID_VALUE</cbc:CompanyID>
Technical Reference
XPath: /Invoice/cac:AccountingSupplierParty/cac:Party/cac:PartyTaxScheme/cbc:CompanyIDCode Example
<cac:PartyTaxScheme>
<cbc:CompanyID>PT123456789</cbc:CompanyID>
<cac:TaxScheme>
<cbc:ID>VAT</cbc:ID>
</cac:TaxScheme>
</cac:PartyTaxScheme>Common Causes
- ·Missing PT prefix
- ·Invalid NIF
- ·Wrong length
Seeing this in production? The API handles BR-PT-01 automatically. See the fix response →
Commonly Seen In
Frequently Asked Questions
Portuguese invoices must include the 9-digit NIF (tax number).
Add Portuguese NIF with PT prefix. Invoice Navigator detects this error and prompts for the required business data before applying a safe fix.
Yes, BR-PT-01 is a critical error that will cause invoice rejection. It must be fixed before submission to ensure your invoice is accepted by the recipient's system.
BR-PT-01 requires specific business data to resolve. Invoice Navigator detects the error and guides you through providing the needed information, then applies the fix with full audit documentation.
BR-PT-01 is commonly seen in exports from Portuguese invoicing systems. These software packages sometimes generate invoices that need adjustment to meet full compliance standards.
Related Content
Last updated: 3 March 2026
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