Components (Item Type)
You can set an Item as a Component so the Item is not visible on the customer’s printed Invoice and is only visible on the Invoice page and Delivery/Pickup Dockets for tracking purposes. If the component has a price on the invoice it will show on the invoice printout. Components with no charge are hidden. The component setting is set at the Item Type level.
Setup Item Type as Component
Go to Setup > Item Related > Item Types. Click an item type to edit then check the Component checkbox. Any item linked to this Item Type will now be hidden from the invoice printout if no price is entered (or price is 0.00).