Question softlimit error after homeing

hi everyone i am newbie cnc hobbiest. i search on internet but im not find any solution for this please help me.
i try to simple job for testing the sc 2 d420 machine. i create an material 100x100mm and 90mm circle cut on center. my tool diameter is only 0,01mm
(look attachements )

and i get an soft limit error. i dont understand why. my machine worksize 297 x417mm .

how can i start the job on home zero position ? i manualy move the x and y axis only 1 step (not unit ) it works.

why i cant start job on home zero position ? please me understandings this situation.

thank you