The Centre Thursday told the Supreme Court it has decided not to enumerate Other Backward Castes as part of the 2021 Census as taking a headcount of castes other than Scheduled Castes and Scheduled Tribes will be administratively extremely complex and cannot yield complete or accurate information.The Centre Thursday told the Supreme Court it has decided not to enumerate Other Backward Castes as part of the 2021 Census as taking a headcount of castes other than Scheduled Castes and Scheduled Tribes will be administratively extremely complex and cannot yield complete or accurate information.