mkmunir,
Goto website
http://www.bls.gov/oes/2001/oes_stru.htm#15-0000
the 999 is not stated there but the '15-0000 Computer and Mathematical Occupations' list has the DOT codes
15-1031 Computer Software Engineers, Applications
15-1032 Computer Software Engineers, Systems Software
The 999 is taken for granted.
Goto website
http://www.bls.gov/oes/2001/oes_stru.htm#15-0000
the 999 is not stated there but the '15-0000 Computer and Mathematical Occupations' list has the DOT codes
15-1031 Computer Software Engineers, Applications
15-1032 Computer Software Engineers, Systems Software
The 999 is taken for granted.