TL;DR — Quick Summary

Fix CFDI 4.0 invoice cancellation errors on Mexico's SAT portal: receiver rejection, expired 24-hour window, error code 203, and cancellation acknowledgment issues.

CFDI 4.0 Invoice Cancellation Errors

CFDI 4.0 cancellation in Mexico requires compliance with SAT rules that changed significantly in 2022.

Common Errors

1. Receiver Rejection

Solution: Contact the receiver first, or issue a credit note (CFDI de egreso).

2. Error 203

Solution: Check the CFDI isn’t already canceled. Include replacement UUID for reason code 01.

3. Expired e.firma

Solution: Verify your e.firma validity (4-year expiration). Ensure .cer and .key files match.