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Service Advisory | Scheduled SPEI Contingency Test – October 27, 2026

Hello,

We would like to inform you that on Tuesday, October 27, 2026, the Bank of Mexico (Banxico) will conduct a scheduled contingency test in the production environment of the Interbank Electronic Payment System (SPEI).

This test is designed to validate operational continuity among all the SPEI participants through an alternate operating scheme (COA).

Test details:

Detail

Information

Date

Tuesday, October 27, 2026

Time (Mexico City)

6:00 PM – 8:00 PM

Time (UTC)

Wednesday, October 28, 00:00 – 02:00

Estimated duration

2 hours

Potentially affected service

Penny Validation (SPEI-based bank account validation)

Expected impact

The service will remain available, although delays in processing and confirming operations may occur.

What do we recommend?

During this window, we recommend allowing additional processing time for Penny Validation operations.

  • Avoid scheduling bulk operations or time-sensitive validations during this period whenever possible.

  • If an operation takes longer than expected, check its status before submitting a new request to avoid duplicate operations.

  • No integration changes are required.

Once the test is completed, processing times are expected to gradually return to normal.

If you experience any unusual behavior or require assistance, please contact our support team: https://zenp.li/rzT

Thank you for your understanding.

The Zenpli Team

InfrastructurePenny Validation API