When using the "Instance Breakdown" option in custom in the Views, without selecting the "metric group", the breakdown won't work if the Instance of the "Metric Group " is empty.
Aria Operations 8.x
-Select the desired metric or property from the selected subject. If the metric/property is not collected in some specific objects, use the icon "metric picker", it displays a list of available metrics/properties for a selected object.
-Check, Add Instance breakdown
-Select from the instance name the Metric Group option, to save the view, the Update button will be enabled, then you will be able to save the custom view
Note
-Add Instance breakdown, the description of this feature in written in this link below List View
-Ensure that in the policy section, the metric(s) or properties(s) are enabled in your default policy.
-Metric Picker