A numbering series is a sequence of consecutive internal numbers, for example 1/2026, 2/2026, 3/2026. Sometimes one number in the series is missing. The solution differs depending on whether the missing number is recorded as a gap. Document series can be found in the Goods, Sales, Purchase, Money, and Accounting modules.
Step 1: Check Whether the Gap Is Recorded
Open the document series in which the number is missing — for example Sales → Document Series → Issued Invoice Document Series.
On the series detail, go to the Annual Numbering Series Items tab at the bottom and open the relevant record.
Check the Gaps in the Numbering Series tab.
Step 2a: The Number Is in the Gap Register
The record is stored in a "gap" of the document series. Delete the incorrect record on the Gaps in the Numbering Series tab — this returns the number to normal use.
Step 2b: The Number Is Not in the Gap Register
The number was probably already used, and the document was later changed — for example, changing the document type overwrites the internal number. The solution is to "reset" the annual numbering series item:
Open the annual numbering series item of the given document series.
Set the Current Number and Starting Number fields to the missing number.
The first newly created document will then receive this exact number.
⚠️ Resetting the annual item will affect the numbering of all documents subsequently created in this series. Make sure that the number is truly not used by any document, otherwise a duplicate will be created.
💡 Not sure which option to choose? Write to us at podporaflexi@abra.eu and we'll go through the situation with you.