Description of Error:
When attempting to save a customer or post invoices the following error appears when using the QuickBooks interface:
Error Posting Customer 0019349:
There was an error when saving a Customers list, element "Customer Name". QuickBooks error message: The tax item is invalid.
Cause of Error:
QuickBooks is not setup with a default tax code. A similar error will appear if you attempt to create a customer in QB.
Set a default tax code in QuickBooks. This can generally be accomplished by going into Single-User mode and selecting Edit → Preferences → Sales Tax.