An item could not be entered on a Sales Order because the VAT Calculation Method needed to be Normal Tax, not Sales Tax. This could not be changed in Tax Posting Setup, but when Suggest Accounts was inadvertently clicked, the field was changed from Sales Tax to Normal Tax. Not surprising, the item could now be entered on the Sales Order, but other documents are getting Posting Outside Allowable Date errors. I can't find any way to change this back to Sales Tax. Please help.
EDIT - Avalara is installed.
EDIT 2 - I have been able to restore the Sales Tax calculation method line in Tax Posting Setup, but if I try to restrict posting dates in General Ledger Setup, I get two errors: Posting Date is not within your range of allowed posting dates, Tax Date is not within your range of allowed posting dates.