HubSpot Ideas


Possibility of 1:1 or 1:M associations between all objects, including custom objects

It is possible to set one-to-many associations between standard objects (as described here), however that does not extend to custom objects. Currently it is only possible to create many-to-many relationships, which significantly reduces the usability and functionality of custom objects. 

As an example, we have added a custom object called Partner Agreements. We would like to associate that object to one company we share the agreement with, but a company should only be allowed to have one of these associations. 

2 Replies

This issue needs more visibility.  


The inability to control custom object association is a significant issue when building solutions in HubSpot.  The thread linked below hints at an API based workaround for forcing the cardinality of custom objects but the HubSpot UI doesn't fully support this causing the Add buttons still appear on the one_to_one side when a record is already set.


HubSpot Community - One-to-many custom object associations - HubSpot Community


Did HubSpot never think that there would be scenarios where its users would need to avoid M:M relationships?



Definitely - I believe Salesforce can do this.  Hubspot needs to as well.