The manufacturer registers the reservation of product, which is requested by the supplier. If the product is available, he may issue it to the supplier. If not, manufacturer put the reservation to the waiting list until the product is not available. On availability, manufacturer notify to the first waiting supplier (Supplier is too many). Otherwise he may cancel the reservation after prescribed date. The business processes are usually modelled in two forms, i.e. “as is”, represents current situation, and “to be”, represents target situation that should be reached after automation or refactoring [10]. For software developers it is important to know which parts in target business processes the software system should implement or support.