Father surname on marksheet is Aggarwal but we recently come to know we belong to sc and made a caste certificate will issue verify in nit
There shouldn't be any cause of rejection of the certificate even if it's made recently, but as for the following times ahead, try to make a caste verification certificate too. Because, at times the verification certificate is also asked for during Documents submission. So, better to be on the safer side.
Hope this helps.
Good Luck !