Facet Body cannot be defined as Blank in the External Program Simulation.
Solution1. By default, Using a facet body as the initial blank geometry is not supported. This has been mentioned in the documentation.
Link below:
2. However you can activate this function by setting up an Environment Variable:
"UGII_CAM_ISV_ALLOW_FACET_BLANK=1"
With this Variable, the user will be able to use Facet body as blank in External Program Simulation.
This option is not set by default as the results can vary depending upon the quality of the Faceted body. User has to make sure to have a good quality Facet Body for using this function.