Tally Master Voucher Delete Cancel Control used to restrict deletion and cancellation of vouchers for defined users. Default tally allowed to delete and cancel of any voucher when alteration access provied in the security level. Using this features this can be totally locked and rights can be assigned to decided users. Activate the Add-on. For Tally.ERP 9 Series A version lower than Release 3.6 and above Go to Tally Master Admin> F11: Features > Tally Master Features § Set “Yes” to the options “Activate/Alter Tally Master Features” and (If not activated earlier) § Set “Yes” to the options “Use Advanced Security Features” and § Set “Yes” to the options “Enable Voucher/Master Deletion/Cancel Control ”