In Tally there is two methods for setting voucher number that can be set for any type of voucher say for payment voucher, receipt voucher, sales voucher, purchase voucher, journal and so on.
The user can set voucher numbering as automatic or manual. it it sets number to automatic then it will prevent the duplication number automatically however if the number has been set to manual then it can set “Prevent duplicate number yes or no “
The process is simple
Go to main menu of tally then select Accounts Info then select voucher type.
then go to alter and you will find list of vouchers
now select payment voucher and press enter
If you want to set voucher numbering as manual then select manual as method of voucher numbering
and then accept the screen.
If you set the voucher number to automatic then u may further set prefix and suffix to a voucher that will capture by the tally automatically whenever u are entering a voucher