There is a feature inside Word, Excel and PowerPoint to mark a document as final. More info here: https://support.microsoft.com/en-us/office/help-prevent-changes-to-a-final-version-of-a-file-b1af610f-f172-42c9-85fc-a178a503cc81?ui=en-us&rs=en-us&ad=us
Basically you go inside the Office Document go to File > Protect Document > Mark as Final. The next time someone opens that document a message appears at the top stating this document is final.
Is there a way to display that the document has been "marked as final" in the SharePoint Online Document library view? I was not able to find an out-of-the-box metadata column that displays this. Is there a SPFx extension available to do this?
Note: I'm aware that I can add column on the document library called "Final" (Yes/No), this however is clunky as you would think the user marking the document as final would capture some metadata behind the scenes.