Link a person to a custom object
Create a relationship between a person and a custom object. You pass a relationshipTypeId (required) that you previously registered or listed via /relationship-types — it determines the link’s role and which custom object type it targets, so you don’t repeat them. The person and the custom object (of that type) must already exist; an unknown relationship type, missing person, or missing custom object each return 404. Only person↔custom object links are supported here today — custom object↔custom object relationships cannot yet be created via this endpoint (but their types can be registered).
Authorizations
Organization API key, sent as Authorization: Bearer boom_org_....
Body
1 - 255External id of the custom object. It must be of the type the relationship type targets.
1 - 255Id of a registered person↔custom object relationship type (from POST or GET /relationship-types). Required — it fixes the link's role and which custom object type it targets.
1 - 255Response
Relationship created or reactivated
true if a new edge was created, false if an existing one was reactivated.
The id of the relationship type this edge was bucketed into (resolved or auto-registered from the role + customObjectType). null only on an unexpected resolution miss. This is returned for reference — you never send it in the request.