Keep getting one of these errors when pushing orders to QuickBooks Desktop using MyWorks Sync?

Error

Error Number:3140

Error:There is an invalid reference to QuickBooks InvoiceLineItem SalesTaxCode "" in the Invoice line.

Error:There is an invalid reference to QuickBooks InvoiceLineItem SalesTaxCode "10000-1162485497" in the Invoice line. QuickBooks error message: You can't set taxable if Sales tax is turned off or the item is not a taxable item type.

Cause

1. Sales Tax is not enabled yet in your QuickBooks company - Preferences > Sales Tax
   
    
2. A valid tax code is not set in MyWorks Sync > Settings > Taxes

Resolution

1. Ensure that Sales Tax is correctly set up in QuickBooks.
   • Visit QuickBooks > Edit > Preferences, then click on the Sales Tax sidebar. Ensure sales tax is turned on, and a default Sales Tax Item is set (otherwise, QuickBooks won't let us send any line item to QuickBooks with the "tax" code)
   • Or, if it's preferred to leave Sales Tax off in QuickBooks, both sales tax codes in #2 below should be set to "Non".
     
      
2. Once the above is confirmed, there are two areas in our sync where you should confirm taxes are correctly set:
   • MyWorks Sync > Settings > Taxes. Ensure you have a valid taxable, shipping tax and 0% rate set here. These may not be blank.
     * If you're using a Non-US version of QuickBooks, the setting in MyWorks Sync > Settings > Tax need to be changed from "Sales Tax Item" to "Sales Tax Code".
   • MyWorks Sync > Map > Taxes. Ensure that all of your tax rates in use in WooCommerce are mapped to a valid/appropriate Sales Tax Item in QuickBooks Desktop.