We have had a Customer call complaining about no Parish tax being charged on their invoice. They said that it was working correctly, they were being charged the correct tax and then it stopped. Now they are getting only Louisiana State tax charges.
If you would like a more consistent taxing of the customer we need consistency with what address information the engine is presented, as that is one of the main factors that drive the tax calculation.
Customer was sending different destination addresses for their invoices.