What DUO does well
DATEV Unternehmen online is a solid bridge between client and firm. Documents land in “Belege online”, the firm accesses them, bank data flows along. For collaboration it is established and proven.
DUO is not a bad tool. It is just not meant for everything — and that is often confused.
Where DUO is not the right place
DUO is a hand-over and collaboration platform. At DATEV, the E-Rechnungspostfach in front of it checks incoming e-invoices against the standard, and filing under GoBD principles runs through DUO itself. What DATEV does not describe is an internal checking and approval flow before booking: who checks on the merits that service and amount are right, and who approves.
Whoever pushes invoices into DUO without that step has handed them over, not approved them.
The order decides
The decisive thought: it is not DUO versus inbox but what happens before DUO. An upstream invoice intake accepts every e-invoice, detects the format, validates against the norm, obtains approval and archives the original — and only then hands to DUO.
DUO stays the route to the firm. The intake before it ensures only checked items arrive there.
When DUO alone is enough
There are cases where DUO is enough without much front-end: very few documents, almost only classic PDFs, one person with an overview, close coordination with the firm.
But as soon as the volume rises, formats are mixed or several people access it, the internal checking and approval step is noticeably missing – and queries pile up.
Quick decision
As orientation:
- Few PDFs, one person, close firm coordination → DUO can suffice.
- Many or mixed formats, several accesses → upstream intake before DUO.
- Internal approval before booking important → checking and approval step before DUO.
- Goal: fewer queries in the close → checked instead of unchecked into DUO.