Incorrect Nationality entry in NEET

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My Daughter is an OCI/US Citizen. At Sri Chaitanya, they asked for my daughter's Aadhar and filled the Nationality as Indian in the NEET application.
I realised the error immediately and requested CBSE NEET to correct it right away and multiple times during the correction window.
I got consistent messages saying that this "does not affect her merit or candidature" - hence correction not required.

What documentation should I prepare for submission at the NEET counselling time?
I have the NEET grievance filings and their responses.