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.
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). It checks whether nif/cif format invalid.
When this rule fires, the invoice is non-compliant and will be rejected by Peppol access points and national validation services. The sending system receives a rejection response and the invoice does not reach the buyer.
Why This Error Matters
FACE-001 is a hard failure. Invoices that trigger this rule are rejected at the access point and never reach the recipient. In Peppol networks, this means your sending system receives an MLR (Message Level Response) with a rejection status. The invoice must be corrected and re-sent, adding delay to your payment cycle.
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. 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
Handle FACE-001 Automatically in Your Pipeline
The compliance engine auto-remediates this error with controlled safety policies and evidence pack generation.