COBie is a data exchange format during the operation and handover phase of a project. This often takes the form of a spreadsheet that is peoplefriendly-readible.
By using the addin BIM interoperability tools of Autodesk. This spreadsheet can be generated directly from the drawing.
Later this spreadsheet can be used by the facility manager/owner during the operational phase of the building.
In the following blog you can find a basic explination of COBie.
https://www.biminteroperabilitytools.com/cobieextensionrevit.php
I added an empty spreadsheet as an example/spreadsheet.
Revit Certified Professional Architecture, Structure and MEP.