Why numbers follow each other without gaps, how to customize the prefix and what to do about a gap.
Invoices must be numbered continuously and chronologically. The number is assigned on validation, never on a draft.
Customize the format
In Company settings → Numbering, choose for each document type the prefix (FA, DV, AV…), the number of digits and the yearly reset. Example: FA-2026-00038.
A number seems to be missing
- Search for the number in the invoice list with the “All” filter: it may be an invoice cancelled by a credit note.
- Check the company audit log on that date.
- If the number cannot be found, open a ticket with the numbers before and after the gap: support will provide a technical certificate for your register.
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