Final answer:
There is no universal security attribute that needs to be turned off for Push Notifications to work, but users may need to allow notifications for each app and check Do Not Disturb mode, permissions, and battery optimization settings.
Step-by-step explanation:
To enable Push Notifications on a device, no particular security attribute needs to be universally turned off. However, the user may need to specifically allow push notifications for each application, which can be done in the app's settings or the device's notification settings. On some devices or within certain applications, one might need to ensure that Do Not Disturb mode is disabled, as it can prevent notifications from being delivered. Additionally, for mobile applications, the user should check that the app has the necessary permissions to send notifications, and that background data and battery optimization settings are not preventing the app from operating properly.