Impressions not delivered. If 600,000 impressions are bought and only 200,000 are delivered, the make-good is 400,000. Make-good impressions typically run in the month following the end of flight date or are credited to the campaign invoice.
Impressions not delivered. If 500,000 impressions are bought and only 400,000 are delivered, the make-good is 100,000. Make-good impressions typically run in the month following the end of flight date or are removed from the campaign invoice (credited).