Hi @BHUVAN
in the then part of get transaction data, if your datatable dt_input is empty or has no more rows, you can set out_transactionitem = nothing to stop the process.
Use condition like in_transactionnumber less than or equal to dt_input.rows.count in the if activity. if false, set out_transactionitem = nothing. if true, set out_transactionitem = dt_input.rows(in_transactionnumber minus 1).