Inventory Disk Type (HDD or SSD)
In order to populate the data required for reporting on the drive type, Solid State Drive or Hard Disk Drive, you must extend hardware inventory to include the Logical Disk to Partition and the Disk Drive to Disk Partition classes. You must also add the Deviceid column to the default data collected from the Physical Disk WMI class. Skipping this step will not generate any errors however, you will not be able to report on the drive type. This may not be a concern for some environments as they already know that all devices have SSD's in them.
For more information on extending Configuration Manager hardware inventory see the section Add a new inventory class on the How to extend hardware inventory in Configuration Manager documentation page.