Mark Vouchers tally prime

 Mark Vouchers as Optional

Any voucher in Tally can be marked as Optional by pressing Ctrl+L (Optional)
during voucher entry or in alteration mode. Masking voucher as Optional will remove the accounting impact of the transactions from the books of account. Any transaction which is recurring in nature like rent, repayment of loan etc. you can pass all such transaction and mark them as optional.
Once the actual date such transaction occurs you can regularise the transaction by
opening it and pressing Ctrl+L (Regular).