Have my CHSPE, but no option in CSU applications?

So I left high school my senior year after receiving my California High School Proficiency Exam Certificate in my junior year. I had always assumed that i would be able to show that I completed this for when I transfer, but I do not see an option for it on the applications. There is only an option for graduation date and GED completion date. So should I go get my GED and reflect that on the application? Is it really that big of a deal if I mark ‘have not completed either’? Or is there some way I can show that I have my CHSPE that I’m not seeing? Thanks for your help.