the Fallback logic In the VFS-DATEV export, this refers to a two-stage checking routine that ensures the document link is also transferred to DATEV for the tax firm, even if the primary source field at the journal entry level is empty.
Context
The export first checks the DMS link field at the journal entry level. If it contains a value, this is exported as the document link. If the field is empty, the second stage is applied: the export reads the CANDIS field U_CandisLink_AP at the document level and uses its value as the document link. This logic is implemented from VFS v04.2026 and is specifically aimed at clients who import incoming invoices via CANDIS and therefore only have the link stored at the document level. (Source: V04.2026_V2, Section 4.1.2, p. 10)
Demarcation
The fallback logic is not a general error handling concept; it's specific to the document link transfer in the DATEV export of the VFS. Other export fields follow their own rules and are not affected by this logic.
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