03-01-01
in your bin structure, 7th & 8th position if for Level and you want to define the sort field as 01,02 then you need to define the structure as 1 & 2 in 7th and 8th position if you will reverse this e.g. below 7th position if you will put 2 and below 8th , 1 then sort field will come like 10,20
meaning of 1 & 2 is which character needs to get filed first in the sort filed
with the above bin structure03-01-01 , 03-01-02,03-01-03
e.g. 7 8
1 2
result will be 01, 02,03
7 8
2 1
result will be 10, 20,30