The checkDuplicate endpoint allows you to quick verify that a particular person does not already exist in Follow Up Boss. This call will correctly tell you if a person exists or not, even if you do not have access to that person with the API key you're using for this API call.

If the person you're looking for already exist, the response will tell you whether they were found by the specified email address or phone number, and which agent is currently the assigned agent for that person.

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