To fix QuickBooks online invoice number issue you need to apply the following steps:
Click on the Gear icon and select ‘account and setting’.
Under this select ‘sales’ and click on the icon that looks like a ‘pencil’.
Check ‘custom transaction numbers’ and click ‘save’ and ‘done’.
These steps will help solve the QuickBooks invoice number issue. If you want additional help, you can get in touch with QuickBooks online technical support number to solve your problem through the help of experts.
Read More: https://customer-care-help.com/support- ... ks-online/