I have a zerodha demat account created 3 years ago, do I need to do ekyc for creating mutual fund account?

I want to invest in mutual funds. When I checked on cams website, it shows ekyc is done without entering personal documents such as canceled cheque and aadhar number. When it checked the cams verification status it says account is validated. Furthermore, do I need to enter FATCA details to start investing in mutual funds?