| LEVEL | DESCRIPTION | 
| ERROR | Neither STA nor STD is entered. | 
| ERROR | No Airline information entered. | 
| ERROR | Aircraft Model information not entered. | 
| ERROR | Airport information not entered. | 
| ERROR | Flight Plan start date not entered. | 
| ERROR | Flight Plan end date not entered. | 
| ERROR | Flight Plan start date is later than Flight Plan end date. | 
| ERROR | No weekdays is selected as a day of flight. | 
| ERROR | Generation type not specified. | 
| ERROR | STA is input but Arrival Flight No information is missing. | 
| ERROR | STA is input but arrival flight FROM Airport information is missing.  | 
| ERROR | STA is input but Arrival Load Type information is missing.  | 
| ERROR | STA is input but Arrival Flight Type information is missing.  | 
| ERROR | STA is input but Arrival Flight scheduled/charter information is missing. | 
| ERROR | STA is input but Arrival Flight International/Domestic information is missing. | 
| WARNING | Arrival Flight International/Domestic information is inconsistent (when the from airport, destination airport and the country of the handling company are the same, the flight is considered to be domestic) | 
| ERROR | STD is input but Departure Flight No information is missing. | 
| ERROR | STD is input but departure flight Destination Airport (TO) information is missing. | 
| ERROR | STD is input but Departure Load Type information is missing. | 
| ERROR | STD is input but Departure Flight Type information is missing. | 
| ERROR | STD but Departure Flight scheduled/charter information is missing. | 
| ERROR | STA is input but Departure Flight International/Domestic information is missing. | 
| WARNING | Departure Flight International/Domestic information is inconsistent (when the from airport, destination airport and the country of the handling company are the same, the flight is considered to be domestic). | 
| INFORMATION | If the input contains information for only one leg (arrival or departure). | 
| ERROR | The selected handling company is not the company of the logged in user. |