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FACE-001:NIF/CIF format invalid

Spanish tax ID must be valid NIF (individuals) or CIF (companies) format with correct checksum letter. NIF uses 8 digits + letter, CIF uses letter + 7 digits + control character.

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How to Fix It

Code Example

<TaxIdentificationNumber>B12345678</TaxIdentificationNumber>

Common Causes

  • Missing letter prefix or suffix
  • Invalid checksum
  • Using old format

Frequently Asked Questions

Spanish tax ID must be valid NIF (individuals) or CIF (companies) format with correct checksum letter. NIF uses 8 digits + letter, CIF uses letter + 7 digits + control character.
Verify the NIF/CIF format and checksum letter are correct. You can also use Invoice Navigator's automatic Fixer tool to correct this instantly.
Yes, FACE-001 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 FACE-001 can be automatically corrected using Invoice Navigator's Fixer tool. Upload your invoice and the tool will identify and fix common issues, including nif/cif format invalid.

Last updated: 18 January 2026

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