True or false? It isn’t necessary to create custom properties in HubSpot ahead of time for the associated data to import correctly.

HubSpot's native import wizard allows you to create brand-new custom properties on the fly directly from the mapping screen if a matching property doesn't already exist in your portal. While it is often considered a best practice to set up your data structure ahead of time—especially for complex field types like dropdown menus or multiple checkboxes to ensure all potential options are mapped accurately—it is not strictly required, as the import interface gives you the flexibility to build text, number, and select properties during the upload setup.