Comment 4 for bug 881020

Hello,
I have checked the problem and found that it is wrong configuration.
create a new task for each procurement
 order line (e.g. for sale order lines), if the corresponding product
 meets the following characteristics:

  * Type = Service
  * Procurement method (Order fulfillment) = MTO (make to order)
  * Supply/Procurement method = Produce

->For your more reference prefer the following link
    http://doc.openerp.com/v6.0/book/5/5_15_Manufacturing/5_15_Manufacturing_forecasting.html#production-and-services

Thanks and waiting for your reply!