When you first set out to use QuickBooks® Sync you may find mapping a bit confusing. The purpose of this overview is to explain the use of mapping. Essentially, mapping is a way to specify where subscriptions belong inside QuickBooks. For example, when subscriptions are transferred into QuickBooks, the application needs to know where to put your tax information. That is where mapping comes into place. Mapping is the way to tell ProductCart that your “CA Sales Tax” goes into the “California State Tax” account in QuickBooks.