How to resolve OpenBuilding export COBie exclusion mapping IFC 2x3 data?

Hi OpenBuilding Forum, 

I had a question on export COBie data. Software exclusion mapping my data in IFC 2x3.

The error message is in the picture below.

and before to export COBie, I had tried to mapping datagroup to IFC class, but the software refuses to save it. (as you can see in the picture below.)

  

Did anyone know the issue and how to solve it?

I am using the OpenBuilding update7 version.

Thanks and Regards, 

Lynn