I’ve done a forum search and can’t find a good solution here. How would I go about setting up a filter to prevent a user from uploading and adding a contact to their database when that contact is already in the database? In testing I can see there are duplicate entries in my database so I am trying to come up with a solution to prevent the duplicate contact record from being created. The key data field I would want to use to check for duplicates is phone number.
I am primarily using a CSV and API endpoint for adding new contacts.