Hope this works. Did you provide the other names for the parents in the application package. There is an option to provide other names in the application package.Thank you so much for clarifying @jadeja.
I had submitted my parents marriage certificate along with the application. Now I am submitting Voter ID, Aadhar card for both parents plus an affidavit for same name for my father as his middle name is missing on both my father and mother's Aadhar and Voter ID. Hope this type of affidavit is acceptable.
For myself, I have only submitted Aadhar and 10th class certificate. I do not have Voter ID. hope that will work.