Outgoing invoices/DATEV interface/ csv format.
Arne Semmler
However, projo is currently also developing a “live interface” for transferring invoices directly to DATEV Unternehmen Online (DUO) -> Compare Canny point: https://projo.canny.io/feature-requests/p/belegupload-der-eingangs-u-ausgangsrechnungen-zu-datev
Arne Semmler
The invoice list can be exported from projo as
.xls.
.xls files can be converted into a*.csv file using almost any spreadsheet (e.g. Excel).