Hi Naseem,
I understand that you have mistakenly entered your grade sheet instead of uploading the eligibility certificate and so to answer your question you can check their official website to see if they are going to open a correction window for the candidates to rectify their mistakes in the application form.
If there is no correction window then I advise that you address this matter to the concerned authorities via post or through mail along with mentioning the proper details and stating the matter and request them to solve the discrepancy at the earliest.
BEST WISHES!
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