Existant RFC fails with invalid checksum for MX

[jsandovalc]

Hi and thanks for the great work with django-localflavor.

We are currently using RFCs from Mexico in our app. We found a weird RFC (ACE900319JT9) that fails with invalid checksum error. According to this official site: https://portalsat.plataforma.sat.gob.mx/ConsultaRFC/, it's a valid RFC.

¿Any suggestion about what to do here?. It looks like an incorrectly generated (but already existant) RFC.

[benkonrath]

I just tried on the validator site you mentioned with RFC ACE900319JT9 and I get the same valid response. I didn't write the code for the RFC validations so I don't know what's going on. I suggest investigating the format of the RFC; it could be that ACE900319JT9 is a special case, a new format or an old format that needs to added to the localflavor implementation.