Creo ModelCHECK > checks > SU11_NORM_REVERSAL (Reversal of Normals)
  
SU11_NORM_REVERSAL (Reversal of Normals)
Y/N/E/W
GeomIntegrityCHECK reports the ranges of naturally bounded surfaces in which it finds a significant local change in the difference of the normal angle.
Suggested Settings:
Inter
Batch
Regen
Save
E
E
N
N