problems about GDO
 

I am doing a optimization work about extrusion die. But I have a quetion now. I finished the design of experiments, but some design points failed to generate the geometry, so i want to delete these design pionts. So I change the Design of experiments type from central composite design to custom and delete the design points. It works and can update. But when I try to update the response surface, it comes error, the component response surface can not be updated. So what should I do?