By default Tally will take Nature of Removal as Domestic. If you want to change the Nature of Removal while passing the transaction, then you have to enable the option Allow modification of Nature of Removal.
● Go to Gateway of Tally > Accounts Vouchers > F8: Sales > Press F12: Sales invoice Standard Configuration > Enable Allow modification of nature of Removal.
● Now you will get list of nature of removal in Excise Sales invoice.
