I think it would be very nice to have successful and failed transactions display differently. Even just changing the border color to red would be a good start. Not displaying fields that will always show 'NA' is also a good practice. If the transaction failed, showing some type of failure message really would be appreciated. A high level message such as "<User ID> did not have enough <BT> to complete transaction" would be perfect.
Another helpful feature would be adding a filter to the top of the transactions list that allows for filtering between successful and failed transactions, as well as transaction types.