question

[EDIT] Discussed privately with this dev through dev@clover.com. We don't support tax rate modification at the lineItem level when working with lineItems that are instantiated from a merchant's Inventory. That being said, if the merchant does not care about reporting, inventory management, etc., one potential workflow is:

• Use the orderConnector to get the Order.
• For the lineItem that you want to remove taxes for, store that LineItem object locally, so we can make a copy of it later.
• Use the orderConnector to remove that particular LineItem from the Order.
• Instantiate a new LineItem from the old one, and clearTaxRates() on it.
• Call orderConnector.addCustomLineItem() to add back the revised line item which now doesn't have any taxes.

The downside is that now this lineItem will no longer be associated with an Inventory item. Its stockCount will not decrement, Clover Reporting will not work on it, etc.