Can I create custom properties in HubSpot during migration process?

Last Updated on July 30th, 2025

There are 3 ways to create custom properties in HubSpot using our mapping UI:

1. Unmapped fields feature
2. Custom fields
3. '+ Select fields' placeholder

All of them are available on the Objects mapping page  (Map Fields):

1. Unmapped fields feature

To proceed, click Unmapped Fields:

A new window will be opened, where you can map fields that weren’t auto-mapped. On the target CRM side, click "Add custom field": 

Choose a field type on your target CRM from the dropdown list. The custom field will appear in the list of HubSpot, so you can match it. 

Set the desired field name, type, and description, and click "Apply".

Both 'Custom fields' and '+ Select fields' placeholder options are reviewed in detail at https://support.migratemycrm.com/map-fields-overview

 

Please note that this option is available for all the objects, except activities (like Tasks, Notes, Emails, Attachments, Calls).

Still need help?

Please submit an inquiry on the contact page, email support@syncmatters.com, or simply reach out to us via chat.