Hi Tharun,
Declare your second internal table with the same column names of 3rd column and 4th column.
types : begin of ty_table2,
col3 type ... " Field name and data type must be same of 3rd column of first internal table
col4 type ... " similarly 4th column
end of ty_table2.
data : ls_table2 type ty_table2,
lt_table2 type table of ty_table2.
loop at lt_table1 into ls_table1.
move-corresponding ls_table1 to ls_table2.
append ls_table2 to lt_table2.
endloop.
Regards,
Ravikiran.K