The title is a metadata component of Word, Excel and PowerPoint files that are a required component of making the file accessible and preventing error flags during UDOIT scans.
To add a title click on File at the top left of the window for Word, Excel or PowerPoint.
On the left vertical navigation menu select Info.
To the right you will see a list of file metadata including one for Title. In the text field next to Title, add a title of the document.