The activation of this (amber yellow) "warning" indicates that the engine coolant temperature is high.
It is activated when the temperature reaches 121C (250f).
Note
In this case, ducati recommends stopping and shutting off the engine immediately; make sure that the fans are working.

Low hands free key (hf) battery level
Steering release error - steering still lockedIndicator trip time - trip time
This function shows the vehicle trip time.
The calculation is made considering the time travelled since the last trip 1
reset. When trip 1 is reset, the value is set to
zero.
The active phase calculation occurs when the engine is running and the vehicle
is stopped (when the vehicle is not ...
Reassembling the front footrest brackets
To reassemble the brackets (6) and (21) carry out the removal procedure in
the reverse order; tighten the screws (7) to a
torque of 25 nm +/- 10% (sect. 3 - 3, Frame torque settings).
...
How to start the engine
With the motorcycle off and the dashboard on, the on/off switch is turned to
"run off"
With the motorcycle and dashboard on, the on/off switch is turned to "run
off".
To start the engine, simply push the on/off switch up to "run on" and press the
black start button.
...