In the Related Objects facet of a case, you can maintain the following information:
Registered products: You can add registered products that are related to the case, such as the product that caused the issue, the product that needs to be repaired, or the product that needs to be replaced. You can also view the product details, such as the serial number, the warranty, the reading value, and the status.
Installed bases: You can add installed bases that are related to the case, such as the location where the product is installed, the configuration of the product, or the hierarchy of the product components. You can also view the installed base details, such as the ID, the description, the account, and the status.
Products: You can add products that are related to the case, such as the product that needs to be ordered, the product that needs to be delivered, or the product that needs to be invoiced. You can also view the product details, such as the ID, the description, the quantity, and the price. References = Solution Guide for SAP Service Cloud Version 2, section Related Objects.