Update OmniClass Taxonomy File
You would like to assign OmniClass numbers using the 2012 standards but are not able to because the default file shipped with Revit provides numbers from the previous standard.
Journal: Invalid Spec/Unit Type
Reviewing journal files of your Revit sessions, you notice warnings related to "Invalid Spec" or "Unit Type <unit> does not specify default format options" and you want to know if these warnings are harmful to the file.