About the Safe Factor function of generative Topoplogy Optimization

I don't know why the current shape is not Generaitve Designe.

I'm trying to model by setting the Design Criteria to the safety factor, but it often fails.

modeling before creation

creation output

The message displayed in Trouble Shooter is as follows.
1. Simulation solver did not converge.
Check one of the next options to resolve the issue:
-Unconstrained rigid body motions.
-Radically different material properties between bodies.
2. The optimization did not converge within the maximum number of iterations.
Try to raise iterations number or decrease element size in Study settings.

So I modified the related contents and tried modeling again, but almost the same problem occurs.

Turns out there are other issues...

Does anyone know why the setting is wrong or not, or how to do Generative Design using Safe Factor properly???

I would appreciate it if a GTO expert would answer.

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