Data entry in Tally ERP 9 is the process of entering business data into the Tally software. This process includes creating accounting masters such as groups, ledgers, voucher types, inventory masters such as stock groups, stock categories, units of measurement, bills of materials, stock journals, warehouses/godowns, batches and expiry dates. It also involves entering accounting vouchers such as payment/receipt/contra/journal/sales/purchase/debit note/