I'm trying to create a feed importer that uses a unique ID that is NOT necessarily in the title field of the content type. For example, were I using the feeds importer to import a list of contacts, I'd like to have the unique ID be the phone number, yet I would prefer that the content title be the name of the contact rather than the phone number, for organization and aesthetic purposes. Is this possible? As of now, it seems I am limited to enabling only the title field as unique.
I realize I could simply put the contact name into the title field and set that as unique, but this is less prudent, as contacts may have identical names and similarly with my data, the duplicity of titles and/or misspellings is/are inevitable. Any help would be appreciated!