India's Census 2027 will finally include caste enumeration, a demand since 1957. However, the author expresses concern over the lack of clarity regarding data collection methodology. Previous attempts, like SECC 2011, failed due to open-ended questionnaires leading to inconsistent caste nomenclature. Successful state-level surveys in Bihar and Telangana utilized pre-determined caste lists. The author stresses the crucial need for a widely discussed, pre-defined list of castes for Census 2027. This would ensure data accuracy, enhance the Census's credibility, and prevent repeating past errors, vital for policymaking and India's statistical framework.