No its not ok to upload BC certification in place of OBC certificate as rrb NTPC Obviously defines The principles of obc certification which states that the certificate has to be issued by an authorized authority, for instance a District Justice of the peace, Collector, Deputy Commissioner, or Earnings Officer https://rrbvacancies58023.thenerdsblog.com/39198099/railway-recruitment-bangalore-last-date-rrb-apply