Automatic creation of PR from sales order (SO) for the materials compement

Hi

I would like to create un PR from a sales order , but only for the material component (defined on Tcod CS01)

I already know how to create un automatic PR from SO By using the TAS post type

But the problem is that this method create only a PR for the material in SO him self and not for his component "what I really want"

I search every where in VOV6  and VOV7 but I didn't find what Iu2019m looking for

Thanks in advance For your advices and help

S.Ghafai