You can edit the invoice number in the Actions menu via the option "Edit Invoice number".

After clicking on "Edit Invoice Number," a modal window will appear. Enter the required invoice number and click on Save.

In the advanced options, you can select the number to be used on the next created invoice. This is helpful in cases where you have deleted multiple invoices and need to adjust the numbering system.

You have also the option to edit the invoice number directly in the invoicing process. Simply enter the required invoice number into the "Invoice no" field.