Import List Csv Lookup Key

[MarieEveReid]

Hello everyone! 

what i need is to update my list. So I need to import my csv and update some fields... But my new csv file has all the email fields empty. So I need to have another lookup field. Is this possible? 

thanks. 

[Darshil_Shah1]

I don’t think this is something that is possible via UI/List Import wizard. You could reach out to support to change your de-duplication rule but I don’t think that’s what it is needed  here for importing this 1 list w/o email addresses specifically. I’m afraid you’d have to do some grunt work to add email addresses to your CSV file and then do a list import. Alternatively, you could also use leads API endpoint to update people using lead-id/custom field as de-duplication field.

[SanfordWhiteman]

What field are you trying to use, exactly? Not all fields are available as lookup keys, even if you use the API.

[SanfordWhiteman · Accepted solution]

What field are you trying to use, exactly? Not all fields are available as lookup keys, even if you use the API.

[MarieEveReid]

thanks for the answer, im trying to use a custom field. That I've made.