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The sample is having parts with the Assembly feature (Assembly cut) which is having a reference to the feature (Cut) present in the Assembly.
When I tried to tessellate the part by surfaces the Cut feature is not present.
Also, when trying to select the surfaces using the pfcCreateModelItemSelection method results in a pfcXInvalidSelection exception.
I am using Creo parametric version 188.8.131.52 with the Creo Object toolkit C++.