Update System status at Item Level as per Header System status

Hi,

I ahev a requirement wherein I need to update item level system status as per header level system status. Ther is only one item at item level and will be used only for this specific transaction.

I went thru SCN thread and came across very few threads which says that it could be achived thru Badi' EXEC_METHODCALL_PPF or CRM_ORDER_STATUS.

Could somone give me pointers towards how this can be achieved.

Thanks,

Rahul