Why does my sales order remain open?

As tax using a QuickBooks tax code

Problem

Your sales order remains open, even though Connex synced an invoice. 

Description

You are adding tax as a line item and the tax remains open:

Solution

Connex cannot close a sales order, if it has a line item called sales tax. This is a limitation of QuickBooks. Here is how the sales order will appear:

To close the sales order, map tax using QuickBooks tax codes and disable tax as a line item.