Why is the invoice numbering sequence incorrect? (German market)
Understanding and managing invoice numbering for tax compliance
Why Invoice Numbers Must Be Sequential in Germany German tax law (GoBD) requires that invoices be numbered sequentially without gaps. This means invoices cannot be deleted - it can only be voided — doing so would avoid a gap in the sequence that could trigger a tax audit. How to Cancel an Invoice Without Deleting It Use the Void function (displayed as"storniert"in the German interface): Accounts >> Invoices >> [Invoice] >> Actions >> Void A voided invoice retains its number and appears in the invoice list marked as cancelled. It does not count as revenue. Invoice Number Gap or Out-of-Sequence Invoice If your invoice numbers appear out of sequence or have a gap, contact Octiv Support. Do not attempt to manually renumber invoices — the numbering is managed by the platform and must be corrected on the backend. Duplicate Invoice Numbers If two invoices have the same number (rare, typically caused by a data import), contact Octiv Support immediately. Do not delete either invoice — the tech team will investigate and correct the numbering.