Hi :)
I have created a new standard user profile for a new employee. When they try to add products to a new invoice there is no option to add TAX. Then when you try to save, it will only give you this error message: ERROR "Line Item Tax Code Missing (TXN)"
I have tried that same process myself using my Admin profile and I do not have this problem, the tax is automatically selected for me as per the products information.
Also, this seems to be a problem with the Quickbooks app exclusively. It seems to work on an Ipad if I use a regular browser to open Quickbooks.
How do I fix this?