Next Experience / Unified Navigation Banner Announcements
ServiceNow Docs recommends that you use Banner Announcements instead of customising the Produce Description. This is not available in UI16.
In a nutshell, all you have to do is create a new "Banner Announcement" [sys_ux_banner_announcement] record and enable "Non-dismissible" to the banner announcement is always visible.
Note: Next Experience Banner Announcements are not visible on the Service Portal.
The benefit of using Banner Announcements is that it will not be affected if the user has selected a different theme. In contrast to colouring the banner, which can be undone by the user selecting a different theme.
You can read more about them here in ServiceNow docs.
Next Experience banner announcements
Note these banners will not survive a clone with the out-of-the-box clone profile.
I'd recommend adding a Clone Data Preserver to preserve "Banner Announcement" [sys_ux_banner_announcement] records where "Non-dismissible" is set to TRUE, and set the preserver's "Theme" field to TRUE so it honours the clone "Preserve theme" setting.
Here's an example of a banner announcement for a DEV environment and the Banner Announcement record that made it happen. Note that the banner announcement cannot be dismissed and will always be present.
