On Cancellation voucher This is the result of an explicit SAP B1 reversal transaction that completely cancels out an erroneous posting. In the VFS-DATEV export, the reversal document from v04.2026 forms the factually correct basis for assigning the general reversal key (GU key).
Context
In the cancellation-based mode of the VFS-DATEV export from v04.2026, only the cancellation document receives the GU key 20 – not every posting with a negative sign and not every credit note. This means the export correctly reflects the actual posting process in DATEV: The cancellation document reverses the original incorrect posting, and DATEV flags it as a reversal. Credit notes, which could take the same technical route, will not have a GU key. (Source: V04.2026_V2, Ch. 4.1.3, p. 11)
Demarcation
The cancellation receipt is not a credit note. Credit notes arise from commercial reasons (complaints, returns); cancellation bookings arise from booking errors. Both can look similar in SAP B1, but they must be treated differently in the DATEV export to ensure correct representation in the firm's software.
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