The answers to the previous questions also indicate how detailed the installed base records should be and which details are important.

For example, if you offer warranties from the date of purchase, your installed base records need a date of purchase for each item sold. If you limit the warranty to customers who register the product, you need to track which items are registered.

Detail also addresses coverage of the components of an item. Especially with configured products, certain options may have warranty coverage distinct from the parent item.