enum InventoryUnitError.Reason (v202308)

Possible reasons for the error.

Enumeration Description
EXPLICIT_TARGETING_NOT_ALLOWED AdUnit.explicitlyTargeted can be set to true only in an Ad Manager 360 account.
TARGET_PLATFORM_NOT_APPLICABLE The specified target platform is not applicable for the inventory unit.
ADSENSE_CANNOT_BE_ENABLED AdSense cannot be enabled on this inventory unit if it is disabled for the network.
ROOT_UNIT_CANNOT_BE_DEACTIVATED A root unit cannot be deactivated.
UNKNOWN The value returned if the actual value is not exposed by the requested API version.