Question: Which of the following is needed to call a custom property in your integration?
- The custom property’s ID
- The custom property’s value
- The custom property’s internal name
- The custom property’s property type
Explanation
A custom property is referenced in API requests by its internal name. HubSpot uses this internal name as the property key when reading, creating, or updating CRM records. The property label may be easier for users to read, but it is not the stable value used in API calls. The property value is the data stored inside the field, not the field identifier. Using the correct internal name ensures the integration targets the right CRM property.
Why the other options are incorrect
Custom property ID This is incorrect because API record calls use the property’s internal name as the property key.
Custom property value This is incorrect because the value is the stored data, not the property identifier.
Property type This is incorrect because the type defines the kind of data stored, not how the property is called in an integration.
Source for verification
https://developers.hubspot.com/docs/api-reference/legacy/crm/properties/guide
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