Creo ModelCHECK > checks > REGEN_SREPS (Regenerate Simplified Representations)
  
REGEN_SREPS (Regenerate Simplified Representations)
Y/N/E/W
Reports an error when you cannot fully regenerate simplified representations in the model. This check can take considerable time. Run it with the ModelCHECK Regenerate command or use the Batch mode.
Suggested Settings:
Inter
Batch
Regen
Save
E
E
N
N