Each of the transactions such as invoice, quotation, etc, have their own running number. The default number formats is [5 DIGIT]. But you can manage the number formats at Control Panel > Number Formats. By default it will always start from 00001.
There is the scenario that sometimes you want to delete the previous transaction and want to re-use back the same running number.
Scenario:
You entered the invoice transaction wrongly and wanted to delete the last few hundred invoices from IV-01881 to IV-02150.
Latest running number : IV-02150
You want to reuse back the Running Number from : IV-01881
Follow the steps below to reset the running number:
1. First, you need to make sure your invoice is deleted from the system. Go to Sales > Invoices > select the Invoice.
2. Click on the Bulk Void Transactions.
3. Next, click on the More Filter > Status (filter by Void.)
4. View the Void Invoice > and click on delete.
5. Next, record a new invoice as usual.
6. Once you click on Save, the running number will start back with IV-01881.
