Meaning: Failed to construct a plane with the input 3D plane. The geometry for the plane by elements was unable to be created or modified. For example, the elements result in three collinear points or the elements do not intersect. Selected elements could be on the To Do List and their geometries were not retrievable or other unknown problems.
Verify that inputs intersect and are not coplanar.
Update any inputs that are on the To Do List.
If the problem persists, report steps taken to your support group.