This article explains how to Renumbering Invoice Number all at once, you can try this method if your Invoice Number is not in sequence one after the other.
I. Check if your invoice is not sequential
Go to Orders Menu
II. Open tools app
Step 1. Open the tools app at https://tools.dealpos.app and login with your DealPOS url and account.
Step 2. Go to Transaction Menu, and select the Renumber Invoice settings.
Step 3. Select the Outlet, Year and Month of the invoice you want to Renumber, then Save.
III. Check again the Orders Menu
Your invoice should have been re-arranged
NOTE: Please take a note that this method will be re-arranged your Invoice Number all at once within the selected Year and Month and can't be undone. This method will also make the invoice number that has been printed different from the one in the Orders Menu.