Sorry, but your question is completely unclear. Which document do you want to translate? One of your own documents? Which KOMA-Script packages or class are you using? A starting point for using another language than English would usually be to use babel. babel is not a KOMA-Script package and question about using it are off-topic here. Or do you want to translate the KOMA-Script manual? In this case, you need to fork the sources and add new files for Begali to the doc source directory and also extend...
deprecated interface commands and options removed
defining deprecated \scr@dte@…@style removed
simplified definition of page number font element
deprecated commands \SetDIVList and \SetXDIVList removed
Messages
Error_SetDIVList
Messages