STEPControl_Reader.ReadFile(stp_file_path)

[yuxuan0]

when i try to read the stp file ,the return is 1.This file is converted from a .prt file in Creo 5.0.I tried to use reader.PrintCheckLoad(True, 0) to print the error message, but I don't quite understand what it means.please give me some help，thank you.

** Model Complete Check List ** Check:1 -- Entity (n0:id) 272:#307 Type:(CONVERSION_BASED_UNIT,NAMED_UNIT,PLANE_ANGLE_UNIT) Parameter n0.1 (dimensions) not an Entity