SAT Updates CFDI 4.0 Catalogs: Key Changes to Understand from February 2026

On February 12, 2026, the Mexican Tax Administration Service (SAT) announced an update to the catalogs of the Digital Tax Receipt (CFDI) version 4.0, a relevant change for companies issuing electronic invoices in Mexico.

These types of adjustments are part of the ongoing maintenance and improvement process of the CFDI standard, whose objective is to ensure proper validation of tax information, maintain data integrity, and facilitate regulatory compliance for taxpayers.

For organizations operating with electronic invoicing systems integrated into their ERP, it is essential to understand these changes and verify that their solutions are up to date to avoid invoice rejections or inconsistencies in tax information.

What are the main changes in the CFDI catalogs?

In this update, specific adjustments were made to the records of the c_NumPedimentoAduana catalog, which contains information related to customs operations that may be required in certain tax receipts.

The change specifically consists of updating some values associated with this catalog, without altering the technical structure of the standard.

It is important to highlight that:

• The XSD schemas were not modified
• There are no changes to the CFDI structure
• This is only a data update within the catalog

This means that, although the technical impact is usually minor, companies must ensure their systems use the current version of the catalog to avoid validation errors.

Updated records of the c_NumPedimentoAduana catalog

SAT reported the modification of two records within the catalog, as follows:

c_Aduana	Patent	Fiscal Year	Quantity	Effective Start Date
52	1907	2026	999999	Feb 13, 2026
65	1937	2026	999999	Feb 13, 2026

These updates respond to the need to keep tax information aligned with current operational records, enabling more accurate validation of invoices that include customs information.

When do these changes take effect?

The changes came into force on February 13, 2026, so they must be considered in all CFDI issuance and validation processes from that date onward.

For companies, this implies verifying that:

• Their invoicing systems are using the updated catalog version
• Integrations with PAC providers or stamping services are aligned
• There are no internal validations using previous versions

What impact could this have on companies?

Although these updates may seem minor, in practice they can generate operational impacts if not managed properly, such as:

• Invoice rejections during stamping
• Errors in integrations with external systems
• Inconsistencies in tax reports
• Delays in billing processes

Therefore, having an updated system and continuous monitoring of regulatory changes is key to ensuring operational continuity and tax compliance.

Is your system ready for these SAT changes?

Staying up to date with CFDI 4.0 updates is essential to avoid tax contingencies and ensure electronic invoicing runs without interruptions.

At LLB Solutions, we support companies and partners in the continuous adaptation of their Microsoft Dynamics-based solutions, ensuring compliance with tax requirements in Mexico and across Latin America. Our team constantly monitors regulatory changes so your operations remain aligned with current regulations.

If you would like to verify that your solution is up to date or need support implementing these changes, we can help you assess your scenario and define the best update path.

Talk to our specialists and make sure your electronic invoicing is ready for current and future SAT changes.

info@llbsolutions.com | Localization Mexico