Dynamic {{site_source_name}} and {{placement}} Parameters
With the recent iOS14 Privacy update you can no longer view conversion data with breakdowns in the Facebook Ads Manager.
For Dynamic Data Connectors we use a process called reverse data mapping. By leveraging reverse data mapping you can now import cost, impression and click data on the {{site_source_name}} and {{placement}} breakdown in Google Analytics and view CPA and ROAS across breakdowns.