This error is caused when trying to export estimates into QuickBooks for invoicing because you have not finished setting up your LMN QuickBooks settings.
- Login to LMN
- Click on QuickBooks
- Click on Setup
- Make sure all drop-down menus have something selected or the export will not work
- Make sure you click save
- Try to sync your estimate again and it should work, if not, please contact LMN support