If this parameter is set to Y (the standard setting) the system will synchronize the Taxcode in each sales order line item with the Taxcode in the sales order header as each order is saved. If the parameter is set to "N", then different sales Taxcodes can be assigned to each line item. Normally this parameter should be set to "Y". If you have situations where you need to change the Taxcode and tax rate for certain items on the sales order (to handle different sales tax or value added tax rates for the different items on the order), this parameter must be set to “N”.
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