You can add it into a Certification as a new Metric, but there is no way to add it to any View or Report in CAPC.
We only allow selection of Polled Metrics in Views and Reports, nothing can be added that comes from a DisplayString such as Name, Description, etc. We do allow some other fields, specifically on interfaces but that is the limit.
What if it was polled and had the same value all the time?
We only support metrics that are numbers to be polled. Since it's not a number, we can't poll it.
This is hard coded there is no custom/automatic adding of fields.
OpenAPI would not have access to the new metric field either.
We do have custom attributes on devices and interfaces that can be created. Need to use REST to set these values on the items in the Data Aggregator (DA). That info is synced to CAPC and can be added to Views and Reports.
https://techdocs.broadcom.com/content/broadcom/techdocs/us/en/ca-enterprise-software/it-operations-management/performance-management/3-6/building/create-custom-attributes.html