The Mission checklist displays a checklist that has to be validated before the drone can start or resume a mission. The items on the checklist can have several statuses:
? Unknown
In progress
Success
Warning
Failed
Depending on the item on the checklist, a failure can have different causes and different solutions:
Drone connection
Cause for failure 
- The App is not connected to the drone through Wi-Fi.
Solutions:
- Check that the device is connected to the remote controller
- Check that the remote controller is turned on
- Restart the App and the drone if you don't find the problem
Drone GPS satellites
Cause for failure 
- The drone is connected to less than 6 GPS satellites.
Solution:
- Wait a few seconds.
- If possible, take off manually. The drone will detect more satellites if it is above the surrounding obstacles such as buildings.
Drone SD Storage
Cause for failure 
- The camera storage reported an error.
Solution:
- Please try another card or try reformatting the card.
Cause for warning 
- Not enough space on camera storage for the estimated number of images for the mission.
Solution:
- Please clear the space or try another card.
Drone to grid distance
Cause for failure 
- The drone is too far away from the grid (more than 2000m).
Solution:
- Bring the drone close to the grid. It has to be less than 2000m away from the center of the grid.
Drone armed (only for DJI drones)
Cause for failure 
- Motors are engaged while drone is not flying.
Solution:
- Turn motors off or take off manually before starting mission.
Drone battery level
Cause for failure 
- The drone battery level is not sufficient (Drone battery level <= Min battery level).
Solution:
- Verify that the drone's battery is charged (at least at the selected Minimum Battery Level).
Cause for warning 
- Low drone battery level (30% >= Drone battery level > Min battery level).
- Multiple batteries are required.
Solution:
- Verify that the drone's battery is charged (at least at the selected Minimum Battery Level).
Camera ready
Cause for failure 
- Couldn't connect to the drone's camera or couldn't set the appropriate photo mode.
Solution:
- Restart the drone and Pix4Dcapture Pro.
Flight mode (only for DJI drones)
Cause for failure 
- The flight mode switch is not in the correct position.
Solution:
- Flip the flight mode position to the correct position and wait a few seconds.
Mission upload
Cause for failure 
- The mission has not been uploaded to the drone or was rejected by the drone.
Solution:
- Wait. There may be other takeoff items which must pass before the mission can upload, or it may take a while for a long mission to be generated and uploaded.
- Make sure the connection with the drone is strong.
- Restart your drone and start again.
Controller battery level
Cause for failure 
- Low Remote Controller Battery Level (Controller battery level <= 20%)
Solution:
- Verify that the remote controller`s battery is charged (at least at 20%)
Cause for warning 
- Low Remote Controller Battery Level (30% >= Controller battery level > 20%)
Solution:
- Verify that the remote controller`s battery is charged (> 30%)
RTK connection (only for RTK drones)
Cause for failure 
- No RTK status
Solution:
- Ensure RTK status is fixed or disable RTK positioning.
Drone calibration
Cause for failure 
- The drone is not calibrated.
Solution:
- Please calibrate the drone in the drone vendor app, then try again.
Homepoint is set
Cause for failure 
- The drone is not connected to enough GPS satellites to retrieve its position.
Solution:
- Verify that the Drone GPS satellites check is validated.
Geofence
Note: A geofence is an area, defined by the user, where the drone is allowed to fly (for example, a typical one has a 500m radius with 120m height to comply with the regulations), but it can be modified by the user in the drone-vendor app.
Cause for failure 
- Case A: The mission is outside the geofence.
- Case B: The drone goes further than any point of the mission than the threshold set in the DJI app.
Solution:
- Case A: Please change the geofence parameters in the drone vendor app, then try again.
- Case B: Go into DJI Fly. Then open the options (3 horizontal dots at the top right). Under Flight Protection, you need to change Max distance to unlimited.
Camera found in database
Cause for failure 
- The camera is not recognized as a supported one.
Solution:
- Ensure that a supported camera model is connected to the drone.
- Restart your drone and start again.