Discover Scania R420 Error Codes: Removal Process, Cab Settings & Configuration

Hello.
How do I search for Scania R420 error codes, how can I remove them from the "cab" and how else can I make other settings from the same place?
Greetings.

R 420 and other, no longer have codes, there is a display and in the service group you can read: notice list. You can delete errors, but not all, you need to know the pin code. Those who have resigned themselves are erasing themselves.

With the ignition switched on, press for 3 seconds ? I ? (i.e., + and -)
In the odometer field, "DIAGNOSE" will be displayed. With the ? and ? arrows, you can switch between systems, eg ACC COO co-ordinator EMS motor, BMS brakes, etc.
In the system, move the arrow ? successive defects with the number of occurrences and possible active marked * (snowflake).
Clearing faults similarly as calling, so that when displaying the text "DIAGNOSE" press the clock icon and the arrows for 1 second, select "ERASE"
Faults will be removed only from the display (you can redo them again by selecting "RESTORE"), they remain in memory and the complete deletion is only possible with SDP3

as service_gh wrote, I will say that you will have 2 values given; 1st is the error code and 2ga is the part number that generates this error

The SDP3 program is reserved only for authorized Scania services.
So how is it to find these faults?