Costa Rica

New XSD 4.4 Update in Costa Rica: Key Changes in Electronic Invoicing

Posted on by llbsadmin
Costa Rica XSD 4.4
08
May

The Ministry of Finance of Costa Rica has published a new update for XSD version 4.4 schemas for electronic invoices and electronic tax documents.

Although no new structural nodes have been added, this version introduces important changes in validations, digital signatures, alphanumeric keys, and tax rules that could impact electronic invoicing systems and ERP platforms integrated with the Ministry of Finance.

To review the official XSD 4.4 update documentation, you can visit the Costa Rican Ministry of Finance website.

Costa Rica XSD 4.4 Update: Key Changes

Alphanumeric Key

The key will no longer be exclusively numeric and will now support alphanumeric characters.

Impact:
Systems must adjust validations, databases, and integrations to handle the key as text instead of a numeric value.

Support for Multiple Digital Signatures

The ds:Signature node changes from allowing 1 digital signature to supporting up to 5 signatures.

Impact:
XML validation and processing workflows must support multiple electronic signatures.

Increased Precision for Specific Taxes

Decimal precision has been expanded in fields related to specific tax proportions.

Impact:
It will be necessary to review:

  • XML validations
  • Rounding rules
  • Tax calculations
  • Data structures

New Reference Types and Codes

The update introduces new document types and reference codes, including:

  • Electronic Export Invoice
  • Electronic Payment Receipt
  • New reasons for replacements, cancellations, and corrections

Impact:
Companies will need to update catalogs, parameter settings, and business rules.

Changes to Legal Entity Identifications

The new version allows alphanumeric legal entity IDs and increases the allowed length for certain fields.

Impact:
This affects validations, forms, integrations, and data models.

Telephone Validation Adjustments

Special phone numbers and values lower than previously accepted are now allowed.

Impact:
This enables support for short numbers such as emergency services.

When Will It Become Mandatory?

According to the Ministry of Finance:

  • Available in STAG and production environments starting: April 22, 2026
  • Mandatory implementation date: November 1, 2026

Companies can begin testing and validations now to avoid future issues.

Recommendations for Companies

Given this update, we recommend:

  • Reviewing XML validations
  • Updating electronic invoicing integrations
  • Validating digital signature processes
  • Reviewing database structures
  • Running early testing before the mandatory deadline

The XSD 4.4 update represents a significant change for companies operating with electronic invoicing in Costa Rica.

Is Your Company Ready for the XSD 4.4 Changes?

At LLB Solutions, we help companies and partners adapt to new tax requirements in Costa Rica and across Latin America.

Our team can support you with:

  • XSD schema updates
  • Business Central adjustments
  • XML validations and electronic signature processes
  • Technical support and tax compliance

Contact us and get prepared before the mandatory November 2026 deadline.

info@llbsolutions.com | Costa Rica Localization

 

 

 

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