Hello! 

Due to a special stamping that is required on some invoices with a special addenda, I must download the XML file of the invoice before it is stamped, to stamp it outside of Odoo and then upload the already stamped XML file and enter the UUID on the invoice.

I have a couple of doubts 1) and 3):

1) How to download the XML file before it is stamped?

    I have tried from the EDI Documents tab, but there is only one .XSL file

where do I find the .XML file?

2) Once the invoice is stamped (outside of Odoo) I will attach the stamped XML file, without problem

3) How do I register the Fiscal Folio (UUID) so that it is not stamped in Odoo again, and continue as normal by applying the corresponding payment to the invoice.

Could I just edit the UUID field?

Thank you for your valuable help!!!

LG