List of debug errors and warnings

Hello everyone,
i have simple question: is there any list with the variety of errors and warnings you receive if you start debugging something on Mikrotik?
There is a simple demonstration: ive turned on PIM debug and i have some error with PIM_REGISTER. I dont fuckin know whats going on, couse i cant google anything on this theme.
Is it about paying for support from Mikrotik or is there any list of general debug warnings and errors?

Thanks,
Jakub.