Preview Merge Contacts

Previews merging source contacts into a target contact.

This endpoint performs a dry run without deleting or updating any contacts. A preview of the updated target contact is returned, but no data is changed in the Contact List.

To perform the actual merge, use Merge Contacts.

Members are typically associated with a contact, each having a distinct member and contact ID. When passing the ID as a parameter, avoid presuming the IDs are identical since they represent separate entities.