Potential Solution 1: Turn on multicurrency in QuickBooks
You are going to want to follow the steps in this article to turn on multicurrency in QuickBooks.
Potential Solution 2. If multicurrency is enabled in QuickBooks, next check to see if the proper currency is selected for each invoice customer.
The invoice customer currency should match the currency of the marketplace it is for. For example, the invoice customer should have USD for Amazon.com, CAD for Canada, GBP for Amazon.co.uk, EUR for Amazon.fr, etc.
Click here to see how to create a new invoice customer within taxomate.