Vouchers in Tally erp 9

At first time  in Tally.ERP 9, there are 18 different pre-defined Voucher types (if Payroll feature is enabled, the number of pre-defined voucher types will be 20). Voucher type pertains to Accounting, Inventory and Payroll. These are used for recording various transactions according to the user needs.

Examples include Cash Payment Vouchers and Bank Payment vouchers where the relevant predefined voucher is Payment Voucher. You may have two or more sets of Sales Vouchers for different kinds of sales transactions e.g. Credit Sales, Cash Sales, etc.

If you want to more voucher than the predefine voucher you can create them by Gateway of tally > Voucher type >create

and if you want to edit or want to ad some more feacher in exsisting voucher you can alter them by 

Gateway of Tally > Voucher types > alter