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BR-PT-01:Portuguese NIF required

Portuguese invoices must include the 9-digit NIF (tax number).

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Why This Error Matters

Portuguese NIF is required for all B2B invoicing in Portugal.

How to Fix It

1

Get NIF

9-digit Portuguese tax number

2

Add PT prefix

Format: PT + 9 digits

3

Validate checksum

NIF has control digit

Code Example

<cac:PartyTaxScheme>
  <cbc:CompanyID>PT123456789</cbc:CompanyID>
  <cac:TaxScheme>
    <cbc:ID>VAT</cbc:ID>
  </cac:TaxScheme>
</cac:PartyTaxScheme>

Technical Details

XPath: /Invoice/cac:AccountingSupplierParty/cac:Party/cac:PartyTaxScheme/cbc:CompanyID

Common Causes

  • Missing PT prefix
  • Invalid NIF
  • Wrong length

Commonly Seen In

Portuguese invoicing systems

Frequently Asked Questions

Portuguese invoices must include the 9-digit NIF (tax number).
Add Portuguese NIF with PT prefix. You can also use Invoice Navigator's automatic Fixer tool to correct this instantly.
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.
Many instances of BR-PT-01 can be automatically corrected using Invoice Navigator's Fixer tool. Upload your invoice and the tool will identify and fix common issues, including portuguese nif required.
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.

Last updated: 18 January 2026

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