QuickBooks Compatible Business Software and Consulting
Custom fields can be added to the Item list to store information about each item. In addition, these fields can be added to invoices, sales orders and estimates as columns in the detail section to hold information specific to that order detail.
Select Item List from the Lists menu in QuickBooks. Double click on any item in the list to open the Edit Item window. From the Edit Item window, click Define Fields. You can create up to five custom fields in the item record.