Chempak temperature and or pressure is out of range for the following

A Warning message in AFT Fathom

The final solution had temperature and/or pressure conditions in the specified pipes obtained with Chempak physical property data which were beyond Chempak's range of applicability. The range value is also displayed. This indicates that the results are probably not valid. It also may indicate an input error in the model because of the extreme temperature or pressure state.