Non-stock items are used for such items as service contracts, which you sell but do not put into your inventory. Quantities, descriptions, and unit prices are printed on invoices, but quantities on hand are not tracked. You can assign a cost of goods general ledger account to non-stock items, but it is not affected by a costing method.
G/L Sales/Inc: Enter the default income account that will be credited when you sell non-stock items.
G/L Invtry/Wage: Enter the default inventory account that will be debited when you purchase non-stock items and credited when you sell non-stock items.
G/L Cost Sales: Enter the default cost of sales account that will be debited when you sell non-stock items.