Architects have been wired to understand complex relationships of data in buildings and document them in schedules with types, instances, attributes and more, all related to COBie long before BIM or CAD.
Building documentation, either in hand drawn, CAD or BIM formats, inherently creates errors. However, COBie users benefit from the ability to easily spot discrepancies and errors because they are in a structured format. Perhaps the reason for COBie resistance and pushback come from the inability to hide problems.
Checking for errors on a 1968 hand drafted schedule of COBie data.
(Don't forget to check the references in all 245 sheets of this set)