In this page you can sign an invoice you have made before. To do it, you will need the file with the invoice and an electronic certificate. At the end you will have a file with the already signed invoice, that you can send to the customer.
Wait while application is loaded.Depending on the connection, it could take some minutes.
Select the invoice to sign
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These are the certificates we have found. Select one of them to sign.If you prefer sign the invoice with another certificate that you have in a file you can find it clicking here.
Select the certificate to sign
Click the button when you're ready.
