Surface frame connection is missing its reference collection relation to the surface.
A surface-default frame connection is not related to a surface or plane.
The member system will not move with the movement of the surface or plane to which it was originally attached.
What You Should Do
The frame connection needs to be modified.
Ask your database administrator to back up the model.
Supply all information possible that may have led to this situation, and submit this information along with the backup to Hexagon PPM Support.
Open the model.
Locate the offending frame connection, and change it to an unsupported frame connection type.
Change the frame connection back to a surface-default connection type, and graphically select the surface to which to connect.