3a06071c_er__Tally__ERP_9_Shortcut_Keys__Functionality
[Key] ALT + 2 [Availability] At List of Vouchers – creates a voucher similar to the one where you positioned the cursor and used this key combination [Functionality] 
To Duplicate a voucher
Help for All Tally user: Tally .ERP 9 Shortcut Keys
Functionality