Hi coolinahcabins,
There is a setting within Quickbooks Online that allows you to generate unique invoice numbers whenever you go to create a new invoice.
To turn this setting on, simply follow these steps:
- Click the Gear icon in the upper-right corner and select Account and Settings.
- Select the Sales tab and go to the Sales form content section.
- Mark the Custom transaction numbers box.
- Click Save and Done.
Once this has been completed, every time you go to create a new invoice it will come up with a different invoice number all the time so you will never get confused ever again!
Hope this helps.
Kristian.