In voucher type, various types of vouchers are included like: sale, purchased, receipt, payment, debit and credit voucher, contra, journal entries. User can create a new voucher it is so because when user create the same voucher in different names. Two types of method vouchering: automatically and numbering. This type of facility is only provided by tally erp-9. at the time of creating voucher, select automatically then give series automatically but when manually then you can give series acc. to you requirement.