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

For example, if warranties are offered from the date of purchase, your installed base records need to have a date of purchase for each item sold. If you are able to limit the warranty to customers who register the product, you will also need to track whether each sold item has been registered.

Another issue related to detail concerns coverage of components of an item sold. Especially with configured products, certain options may have warranty coverage distinct from the parent item.