Accounting Vouchers are used to record all accounts related transactions in Tally.ERP 9. You can selectively set the configuration for entry to allow only those features, which you require while entering vouchers.
Go to Gateway of Tally > F12: Configure > Voucher Entry
For more information refer F12: Configurations for voucher entry.
More :
Predefined Vouchers in Tally.ERP 9
Optional & Non-Accounting Vouchers
Advanced Voucher Entry in Tally.ERP 9