Mandatory fields

hello, i’m trying to uncheck a mandatory field from the standard fields in customer group,
i entered customize form and tried to uncheck it but it didn’t work,
i entered the doctype, it still didn’t work ,
after that i checked the version of the erpnext it’s 11
and i had version 9 and there it used to work.
so it might be from versions?? any help?

Standard fields are not allowed to be edited. However, as a work around you can possibly set defaults and hide the standard fields.

hope this helps!