FACE-001:NIF/CIF format invalid
Fix: Verify the NIF/CIF format and checksum letter are correct. Provide the required value in the free validator.
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.
Engine Classification
Business data required · Explicit input workflow · No assumptions made
Required input: Spanish Tax ID (NIF/CIF)
What is FACE-001?
FACE-001 is a fatal validation rule defined in the Facturae specification (ESP national rules).
When this rule fires, the invoice is rejected by Peppol access points and never reaches the buyer.
Why This Error Matters
FACE-001 is a hard failure — the invoice must be corrected and re-sent before it can reach the recipient.
Validator Behavior
- ·Causes invoice rejection
- ·Error returned: FACE-001
- ·Specification: Facturae
How to Fix It
Technical Reference
Code Example
<TaxIdentificationNumber>B12345678</TaxIdentificationNumber>Common Causes
- ·Missing letter prefix or suffix
- ·Invalid checksum
- ·Using old format
Seeing this in production? The API handles FACE-001 automatically. See the fix response →
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. Invoice Navigator detects this error and prompts for the required business data before applying a safe fix.
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.
FACE-001 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.
Related Content
Last updated: 3 March 2026
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