If you find out that for a particular transaction, retail price from the price file is not applied to the transaction, please be advised that if system encounters the retail price in price file to be less than the retail price in the transaction file, system considers the retail price from the transaction so the selling price to your customer might not be what is expected based on retail price from the price file.
The reason for the system to behave this way is considering the disclaimer by the fuel suppliers that the retail prices are subject to change any time.