If you add a custom field called Serial Number or Model Number to your Item
list, you can enter an item's serial or model number each time you sell the
product on one of your sales forms.
Create a non-inventory part or inventory part item with the name of the
product you're selling.
In the New Item window, click the Custom Fields button.
Click Define Fields.
Select the Use checkbox to add the field, and enter a name (for example,
Serial Number or Model Number) in the Label field.
QuickBooks adds the field to the Custom Fields window. You can enter a value
for the custom field (if the value is always the same), or you can leave it
blank and enter the value (for example, a serial number) on the sales form on
After you finish adding the item, you can add the Serial or Model Number
field to your sales forms (sales receipt or invoice) by
customizing the form to
include the new field. When you sell the item to a customer, you can fill in
the appropriate serial or model number on the sales form.