We currently have the challenge that we should report on deals and contacts across companies that are in a parent-child relationship.
My current understanding from the knowledge base is that this is currently not natively supported within Hubspot, as data doesn't roll up: https://knowledge.hubspot.com/articles/kcs_article/companies/how-can-i-add-a-parent-or-child-company-to-an-existing-company-record (in the answers section below)
So we're looking into how to build that via the API. I took a look at the companies and company properties endpoints, but didn't find any information on how I would be able to see, if a company is part of a parent/child relationship.
It would be awesome if someone would help me to find the right path here! (and if roll up reporting on contacts and deals is already natively supported and the knowledge base is just outdate, please also let me know