Error when uploading mission: INVALID_PARAM1

[ShafSpecs]

Whenever I try to upload a mission via vehicle.mission.upload_mission(), even using the examples provided in this repository, I get the following mavlink error:

Got COMMAND_ACK: REQUEST_MESSAGE: FAILED
Got MISSION_ACK: TYPE_MISSION: INVALID_PARAM1

I am using a simple:

mission_list = []

mission_list.append(
                MissionItem(47.398039859999997,
                            8.5455725400000002,
                            25,
                            10,
                            True,
                            float('nan'),
                            float('nan'),
                            MissionItem.CameraAction.NONE,
                            float('nan'),
                            float('nan'),
                            float('nan'),
                            float('nan'),
                            float('nan'),
                            MissionItem.VehicleAction.NONE))

mission_plan = MissionPlan(mission_list)
vehicle.mission.upload_mission(mission_plan)

[JonasVautherin]

Are you using PX4 or Ardupilot?

[ShafSpecs]

Are you using PX4 or Ardupilot?

ArduPilot

[ShafSpecs]

Now that you mention it, is this an issue with how ArduPilot and PX4 handle mission sequences? Meaning, do I need to send it in raw format?

[JonasVautherin]

I think so, yes 👍

[ShafSpecs]

I think so, yes 👍

Thank you. Question though, I know one of them has a sequence starting with 1 and the other one's starting sequence is zero. Do you know which one PX4/ArduPilot is?

[ShafSpecs]

Seems to be zero. Thank you very much.