I agree with Islenio, I'm from Guanajuato as well and I tried to get the "constancia" before to send it with my application, I called the Canadian Embassy and they told me to wait for a request. If you see the requirements to get the constancia, the PGR asks for a letter of the Institution requesting the document.
I went to Mexico city last week and once I got into the PGR office the first thing the guy asked for was the letter from the Canadian embassy requesting the " constancia" .
Please let us know If we are wrong maybe you can save a lot of time to future applicants.
I went to Mexico city last week and once I got into the PGR office the first thing the guy asked for was the letter from the Canadian embassy requesting the " constancia" .
Please let us know If we are wrong maybe you can save a lot of time to future applicants.