Invoices arrive in DUO booking-ready.
Cortena does the bookkeeping. Every supplier invoice reaches DATEV Unternehmen online with the account, BU key, cost centre and the original document already attached. Your tax advisor reviews and posts the pre-bookings in Rechnungswesen.
The real automation starts in DUO.
Not every company runs DATEV Rechnungswesen. When your books live in DATEV Unternehmen online, this is where automation begins. Cortena makes each booking complete and ready in DUO, for your tax advisor to pick up, or to drive payment runs in DATEV. Your finance team leans less on manual entry and on an external bookkeeper, and gets hours back.
A batch that is ready to book, not ready to sort
Cortena pushes each invoice into DATEV Unternehmen online fully coded. Nothing waits in a folder for someone to enter the account by hand.
GL account
The SKR04 account is set per line, learned from your own booking history and coding guidelines.
BU key
The tax treatment (BU-Schlüssel) is derived from the VAT on the invoice, ready for the posting record.
Cost centre
The cost centre (Kostenstelle) and, where used, cost carrier (Kostenträger) are set from the approval context and supplier rules.
Original document
The source PDF or e-invoice travels with the record, so the image is one click away in DUO.
How Cortena connects to DATEV Unternehmen online
We use the official DATEV interface, not a screen scraper or a file drop. You sign in with your own DATEV account and stay in control of access.
Sign in with DATEV
You connect through DATEV's own OAuth login. Cortena never sees or stores your DATEV password.
You grant the scope
You authorise the client for your data centre and Mandant. Access is scoped to invoice data, nothing else.
Rechnungsdatenservice 1.0
Coded invoices and their images are posted through the Rechnungsdatenservice, the interface DATEV built for exactly this.
Tokens renew quietly
The connection refreshes its token in the background, so batches keep flowing without a login prompt each time.
Cortena and DATEV Unternehmen online, side by side
Cortena is the operator up front. DUO is the archive and your tax advisor's workspace. We are honest about the line: the GoBD archive stays in DATEV.
The document archive of record stays inside DATEV. Cortena does the work in between and hands over a clean batch, it does not replace your GoBD archive. How the DATEV export works
Send a whole batch in one move
Select the invoices that passed approval and send them to DATEV Unternehmen online together. The batch arrives coded, with images attached, ready for your tax advisor to book.
DATEV Unternehmen online, answered
Yes, the workflow is built to help you work GoBD-konform. Every invoice keeps its original document, a full activity log records who coded and approved it, and the document archive of record stays inside DATEV. Cortena is GoBD-aligned, never GoBD-certified.
Your Steuerberater sees a booking-ready batch in their usual DATEV Unternehmen online workspace. Each record carries the account, BU key, cost centre and the original document, so they book instead of re-entering data.
Cortena posts through the official Rechnungsdatenservice 1.0. You connect with Sign in with DATEV over OAuth, and the token renews in the background so batches keep flowing.
No. Cortena captures, codes and approves invoices, then hands the batch to DUO. DATEV Unternehmen online stays your archive and your tax advisor's workspace. We start with payables and do the work in between.
This page covers the DATEV Unternehmen online workflow specifically: what lands in DUO and how your tax advisor uses it. The full DATEV page covers coding, line mapping and the posting batch in detail.
- Still have a question?
Give your tax advisor a batch, not a backlog
See Cortena post booking-ready invoices into DATEV Unternehmen online, coded and with documents attached.
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