errorESfacturae

ES-R-004:Digital signature required

Spanish FacturaE invoices require XAdES digital signature.

Fix this in your source system

MANUAL

Spanish FacturaE invoices require XAdES digital signature with a valid Spanish digital certificate from an accredited Certification Authority. This requires: 1) Obtaining a valid certificate, 2) Using invoicing software that supports XAdES signing.

See the step-by-step instructions below to fix this error manually.

Why This Error Matters

Spanish law requires digital signature on e-invoices.

How to Fix It

1

Get certificate

Spanish recognized certificate

2

Apply XAdES

Sign with XAdES-EPES minimum

Technical Details

XPath: /fe:Facturae/ds:Signature

Common Causes

  • Missing signature
  • Invalid certificate
  • Wrong signature type

Frequently Asked Questions

Spanish FacturaE invoices require XAdES digital signature.
Sign invoice with valid XAdES-EPES or XAdES-T signature. You can also use Invoice Navigator's automatic Fixer tool to correct this instantly.
Yes, ES-R-004 is a critical error that will cause invoice rejection. It must be fixed before submission.

See Also

🇪🇸

E-Invoicing in Spain

Requirements & common errors

Related Errors

ES-R-002

Invalid FacturaE format

Last updated: 18 January 2026

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