Merge pull request #7578 from segmentio/STRAT-5744

[STRAT-5744]| Added Warning for breaking changes in Hubspot for referring custom object Types by base names.

Author: stayseesong

src/connections/destinations/catalog/actions-hubspot-cloud/index.md

@@ -16,13 +16,18 @@ HubSpot is an all-in-one marketing tool that helps attract new leads and convert
 
 When you use the HubSpot Cloud Mode (Actions) destination, Segment sends your data to [HubSpot's REST API](https://developers.hubspot.com/docs/api/overview){:target="_blank"}.
 
-> warning ""
-> The **Upsert Company** action is not compatible with the Mapping Tester on the mappings page if Associate Contact is set to **Yes**. As a result, Segment recommends using the Event Tester or other tools to test and troubleshoot creating and updating companies in HubSpot. 
->
-> Note that for the company to contact association to work, you are required to trigger an Upsert Contact action before triggering an Upsert Company action. Contacts created with batch endpoint can not be associated to a Company from the Upsert Company Action.
+Keep in mind that:
+* The **Upsert Company** action is not compatible with the Mapping Tester on the mappings page if Associate Contact is set to **Yes**. As a result, Segment recommends using the Event Tester or other tools to test and troubleshoot creating and updating companies in HubSpot. For the company to contact association to work, you are required to trigger an Upsert Contact action before triggering an Upsert Company action. Contacts created with batch endpoint can not be associated to a Company from the Upsert Company Action.
+* **Behavioral Events (Legacy)** are only supported with [Hubspot Classic Destination](/docs/connections/destinations/catalog/hubspot/).
 
 > warning ""
-> **Behavioral Events (Legacy)** are only supported with [Hubspot Classic Destination](/docs/connections/destinations/catalog/hubspot/).
+> As of April 29, 2025, HubSpot no longer supports referencing custom object types by their base names. Instead, you must reference all custom objects by using their short-hand custom object type name, `fullyQualifiedName`, or `objectTypeId`. To avoid issues, update the following fields:
+>
+>- **Object Type** and **ObjectType to associate** in the **Upsert Custom Object Record** action
+>- **Object Type** in the **Custom Event V2** action
+>- **Object Type** and **To Object Type** in the **Custom Object V2** action
+>
+> For further details, refer to the [HubSpot documentation](https://developers.hubspot.com/changelog/breaking-change-removed-support-for-referencing-custom-object-types-by-base-name){:target="_blank"}.
 
 
 ## Benefits of HubSpot Cloud Mode (Actions) vs HubSpot Classic