How to fix Posted Sales Invoice numbering issue in Business Central

Introduction

This article guides you through resolving Posted Sales Invoice numbering issues in Business Central when the numbering sequence changes unexpectedly. When the numbering gets changed and doesn't follow the previous sequence, there's a high chance that a new No. Series line has been created for "Customer Invoice". This typically occurs when the AR number sequence changes to a TR number sequence or when blank lines are created in the No. Series configuration.

In this article:

• Identify the numbering issue
• Delete incorrect No. Series lines

Identify the numbering issue

When Posted Sales Invoice numbering changes from one sequence to another (for example, from AR to TR), you need to verify the No. Series configuration in Business Central.

Example:

The numbering changed from AR20201685 (correct sequence) to TR01331 (incorrect sequence). To fix this, you need to delete the TR lines and any blank lines that were created.

Delete incorrect No. Series lines

Follow these steps to correct the numbering sequence:

1. Open Business Central and select the country that was affected.
2. Use the Search option and type in "No. Series", then select it from the results.

3. In the No. Series window, look for the code "CINV" with description "Customer invoice", then open the available lines by clicking on the three dots beside the code.

4. In the list of Lines, delete the blank lines and the line that has TR on it by selecting them and clicking Delete.

Summary

To resolve Posted Sales Invoice numbering issues in Business Central, you need to delete incorrect No. Series lines (such as TR sequences or blank lines) from the CINV configuration. After cleaning up the No. Series, affected invoices must be reposted to adopt the correct numbering sequence.