Non manifold geometry may have been created Analyze
We have figured out (or guessed) that the underlined word should in fact be "HIGHLIGHTED" and not "hilited"
Any help appreciated,
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Non-manifold geometry is usually due to co-incident surface patches that have the surface normals pointing in opposite directions. I haven't done this in pro-e but you should be able to investigate and flip normals as needed. Maybe in IDD?
The other thing is that the surfaces may all pinch to a point somewhere...
There are some interesting answers online to this question. I just Googled it.
Someone has mentioned that "non-manifold" geometry refers to the idea that the surface geometry cannot be laid out in one continuous surface. The example that they gave was that of an hourglass. If you "pinched" the area in the middle until it came to a vertex or one single point it would create two separate bodies of geometry with one shared point.
I am under the impression that there "may" be overlapping surfaces in your part. Or there "may" be a knick that needs to be repaired. Try working with the geometry that you have and use some of the suggested resolution tools available to you. Without seeing the part in question I am guessing that there is a surface mesh issue. Take a closer look at your feature creation geometry to see if there are no issues.