Creo ModelCHECK > start_config_options > Material Name
  
Material Name
The material name can be checked and verified as being from an acceptable list. This option is configured in the start configuration file as shown in the following example:
MATERIAL_NAME STEEL
MATERIAL_NAME ALUMINUM
You can update the material from the Creo ModelCHECK report. To do this, a valid material file having the .mtl extension must exist in either the working directory or in the location specified by the pro_material_dir configuration option in the config.pro file.