US Sales Tax not applying city tax correctly for some Receivables customers

Summary:

We repeatedly encounter situations where Oracle Receivables does not calculate city or county tax when it should, according to State tax requirements.

If we know the tax jurisdiction code and rate that should be applied, can it be entered on the customer site and default to be applied to all transactions and, if so, how? And, if the tax rates get updated, will the updated rates flow through for that tax jurisdiction code?

Content (please ensure you mask any confidential information):

Invoices for various customers are repeatedly missing tax calculations that should be applied, according to state tax regulations. I am aware this can occur for various reasons but other causes have been ruled out, we would like to be able to configure the information on the customer's site for default application on invoices. Is this possible and, if so, can someone advise how?