Never faced such errors

when i enter "M06 T02" or any T03... i get

"3020 TOOL DIGIT NO. ERROR"

and nothing happens. Somehow i understand that this is a macro program alarm. The people I reached out to for help said I should contact my local dealer. But:
*no local dealer in my country
*Doosan Infracore sold their machine tool business few years ago and no longer operate it.

macro and error message are attached.

what should I do or who can I contact to solve the problem???

about cnc
Doosan puma mx3000 (5 axis milling lathe)
Fanuc18i-tb