I went without an appointment and they treated me just to know what kind of procedure you require ... mine was not urgent ...
Exactly making an appointment is very important, because without it you cannot enter the consulate, when you call they will give you a password that you have to give when you arrive at the entrance and also the corresponding requirements for each procedure
With an appointment is very fast, you only need the old license plate and if the address is different from the old license plate, a bill
Making an appointment they will only ask you for the valid registration and maybe identification and a bill that is in your name
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