Most invoices generated by accident were made when users make a pre-bill for viewing purposes from Invoicing - Create Pre-bill. To find and delete it, do the following:
- Click on the Invoicing tab.
- The invoices and batches displayed are listed according to the time they were created with the most recent on top. Click on the invoice created by accident. It should have the status as Open.
- Click on the Delete button and then click OK