Find Records in Marketo That Have Not Synced to Salesforce

Version 3

    Issue Description
    How to identify records in Marketo that have not synced to Salesforce?

     

    Issue Resolution
    Create a smart list using the filter "SFDC Type is empty", as if the record in Marketo has synced to Salesforce, the SFDC Type will either be 'Lead' or 'Contact'