Home » Adsense Multiple Customer Management » You have to enable AdSense backfill when you create ad units, in order to use dynamic allocation. You have to enable AdSense backfill when you create ad units, in order to use dynamic allocation. Advertisement 5shares Facebook LinkedIn Pinterest Twitter Email False True Join our listSubscribe to our mailing list and get interesting stuff and updates to your email inbox. Thank you for subscribing.Something went wrong.We respect your privacy and take protecting it seriously