stock transport order ?

hi all,

in performing STO there are two methods

1.one step

2.two step

--->what & when is the rationale for using these two methods ?

-

>when does the company uses

1.sto w/o sd delivery

2.sto with sd delivery

any real time scenarios if possible ?

kindly do not copy & paste STO notes i have enough,kindly be precise .

thank you.

sriram.