If this is the first time that a certain email address has sent this type of bill to your Lightyear account, it will first appear in the Processing tab.
From the Processing tab you need to apply a map one time only. Once a map is applied, the subsequent bills will automatically appear in the Approval tab with all relevant data stripped out and coding applied.
Please Note: If this is not the first time an email has been sent into Lightyear by this email address, check out the Statements Archive in case it has been accidentally mapped as a statement.