I apply for renewal of OBC NCL certificate at SDM Office for higher studies. Previously it was issued in 2009. As My father and mother expired on 1996 and 2000 respectively.at that time father s anual income is about Rs50,000/-. Now My income (govt employee) is more than 8 lakh. Group A paramilitary rank equivalent to major. They said that as my parents were no more, so my income is considered for calculating creamy layer and they did not renew my certificate. Please advise.