HubSpot uses owners to assign CRM objects (contacts, companies, and deals) to specific people in your organization. The Owners API can be used to get the IDs of the owners you have in HubSpot, allowing an integration to assign records.
The Owners API is read-only. Owners can only be created in Hubspot.
HubSpot owners and HubSpot users (people who can log into HubSpot) are not necessarily the same thing, as you may have owners created through the Salesforce integration
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