Frequently Asked Questions

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Frequently Asked Questions

Document signing

How to sign a document using the e.firma in Mifiel

Document signing

Resources for document signers in Mifiel

How to sign documents in Mifiel without an account using the signing portal

How to sign a document using the e.firma in Mifiel

How does Mifiel protect the use of my e.firma/FIEL?

How do I receive and download the signed document?

Features of the e.firma

How can I see the RFC associated with the e.firma/FIEL that I have?

What is the e.firma or FIEL, which are the files it encompasses and how does it work?

Common errors

I cannot sign, I get the message "The password is incorrect"

What can I do if my certificate is already linked to another account?

What can I do if I forgot my e.firma's password?

I cannot sign, I get the message “You selected a .cer file that corresponds to a CSD”

What can I do when my e.firma files do not match?

The system states that my RFC is incorrect

When I try to sign, it says that the .cer or .key file I selected do not correspond to an e.firma issued by the SAT

Why am I getting the error message “The e.firma you selected has expired/has been revoked” and how can I resolve it?

I was invited to sign but I don’t see the document in the "My documents" section

How to sign documents with an e.firma other than the one I have registered

How do I know if I am using the right files?

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