Taxed Prices
If you use taxed prices and are adding a sales order, you have the option to select or deselect the Use Taxed Prices check box. After you process one line in the sales order, the system changes this check box to read-only.
Also, the system automatically calculates the values and displays either the domestic or foreign fields as read-only on the Product Information Add Sales Order form:
Taxed Unit Price
Foreign Taxed Unit Price
Unit Tax Amount
Foreign Unit Tax Amount
Taxed Extended Price
Foreign Taxed Extended Price
Extended Tax Amount
Foreign Extended Tax Amount