Most of the information for a service line comes from the defaults that you enter in the Summary tab or by the application itself from the coverage template that is associated with the service. But you can manually modify the service line information as per the business requirement.
 

Specify what the service line covers. For each subline, specify one of the covered levels and then enter what is being covered.
A service can cover:
• A specific product that the customer owns (an Oracle Installed Base item instance)
• A party
• A customer account (party account)
• A party site
• An Oracle Installed Base system
• An Oracle Inventory item
For covered products, you can either enter each subline individually or click the LOV indicator to open a browsing window where you can select multiple sublines at once.

If you are covering an inventory item or a product (instance) that the customer
owns, then the application prices the service for you. You must, however, price the
other covered levels manually.