The G-code isn't fully compatible

What happened? 

The printer can detect if a loaded G-code is not compatible with the current printer setup, thanks to a set of saved hardware settings. In this scenario, the printer shows the message "The G-code isn't fully compatible".

Error name: The G-code isn't fully compatible

Error code: #31803 (CORE One) #26803 (MK4S) #27803 (MK3.9S) #28803 (MK3.5S) #13803 (MK4) #21803 (MK3.9) #23803 (MK3.5) #17803 (XL) #12803 (MINI)

How to fix it? 

Ensure full compatibility between the G-code and the printer. In particular, double-check both the G-code and the printer hardware settings in >LCD Menu >Settings >Hardware, for differences in the printer model, the parameters of the installed nozzle, and other hardware settings.