Mapping

[fstopelli-2]

Hi, 

can you help me with this problem?

It's the first time I see it

Thank you

[Bogdan]

It can be multiple reasons... the model is not fully constrained, or the geometry can't mesh properly.
Tell us a little more details ... what creo version you use, general understanding of the model, constraints, loads, etc...
I had similar issues with cast models.

[JXBWk]

check element 1036656 as it is "corrupted" invalid geometry. The meshing step didn't work and the element may well be too distorted. Might be nothing do to with a modelled not being fully constrained !