I tried to send some money online (500 pesos) from my bank account here to my bank account in Canada. I could do it recently but now a notice comes up that I have to go to my local bank in San Antonio Tlay. and present a number of documents first. Documents that show my name, RFC, CURP etc. But one is a bit mysterious they want my FIEL serial number. This all seems a bit odd as I have had an account at this bank since 2011. Has anyone been asked for a FIEL?