Implementing Service Master in Sourcing 10.0

Hi Guys,

I have to implement Service Master in Sourcing 10.0

Markus Frieske's blog here gives a wonderful approach for this. While implementing this I have come across a roadblock. Using scripting, I am unable to change the line itme type from Material to Service. It seems to be restricted by the system design.

My questions are:

1) Can you help me change the Item Type in a line item using scripting?

2) What other approaches do we have to implement Service Master in Sourcing.

Any help is appreciated.

Thanks

Devesh