Thanks Pankaj,
Attached the screen shots for these Tcodes. Area 30 and 50 have same settings, but depreciation values are not showing for 30, 31 and 51, but showing for 50.
I am not sure about whether this area 51 was added later or there in initial configuration. Because we recently started in this client. I will check this point.
OABC
OABD
OABN
OABS
OABU
OADB
Thanks,
Bharath