I’m trying to figure out something about system behavior. So, let’s say I set up Sovrn with the DFP passback codes. What happens when -
Sovrn has no ads to display so it uses the passback tag essentially displays DFP tags in the window. How does DFP know not to send the impression to Sovrn again? I’m going to use the built-in Adsense option in DFP, to capture unfilled impressions if that matters.
I wonder how DFP knows when it’s being called from the my site itself and when it’s being called from within a Sovrn (the passback tags there). Are the tags different? Obviously, I don’t want to create a loop.
Thanks in advance for any calrifications!