Compatibility: Compatibility of this ad. Applicable when type is AD_SERVING_DEFAULT_AD. DISPLAY and DISPLAY_INTERSTITIAL refer to either rendering on desktop or on mobile devices or in mobile apps for regular or interstitial ads, respectively. APP and APP_INTERSTITIAL are only used for existing default ads. New mobile placements must be assigned DISPLAY or DISPLAY_INTERSTITIAL and default ads created for those placements will be limited to those compatibility types. IN_STREAM_VIDEO refers to rendering in-stream video ads developed with the VAST standard.
"APP" "APP_INTERSTITIAL" "DISPLAY" "DISPLAY_INTERSTITIAL" "IN_STREAM_VIDEO"