Question

Exercise 4.30 Draw a collaboration diagram for the following business process at MetalWorks. A build-to-order (BTO) process, also known as make-to-order process, is an order-to-cash process wheretheproducts tobesoldaremanufactured onthebasisofaconfirmedpurchase order. Inotherwords,themanufacturer doesnotmaintainanyready-to-ship productsintheir stock. Instead, the products are manufactured on demand when the customer orders them. Thisapproach isusedinthecontext ofcustomizedproducts, suchasmetallurgicalproducts, where customers often submit orders for products with very specific requirements. We consider a BTO process at a company called MetalWorks. The process starts when MetalWorks receives apurchase order (PO) from one ofitscustomers. ThisPO iscalledthe “customer PO”. The customer PO may contain one or multiple line items. Each line item refers to a different product. Upon receiving a customer PO, a sales officer checks the PO to determine if all the line items in the order can be produced within the timeframes indicated in the PO. As a result of this check, the sales officer may either confirm the customer PO or ask the customer to revise the terms of the PO (for example: change the delivery date to a later date). In some extreme cases, the sales officer may reject the PO, but this happens very rarely. If the customer is asked to revise the PO, the BTO process will be put in “stand-by” until the customer submits a revised PO. The sales officer will then check the revised PO and accept it, reject it, or ask again the customer to make further changes. However, the sales officer has been instructed to accept changes to the PO up to three times, after which the PO must be escalated to a senior sales officer, who can either accept the further changes one more time, or reject the PO altogether. Once a PO is confirmed, the sales officer creates one “work order” for each line item in the customer PO. In other words, one customer PO gives place to multiple work orders (one per line item). The work order is a document that allows employees at MetalWorks to keep track of the manufacturing of a product requested by a customer. In order to manufacture a product, multiple raw materials are required. Some of these raw materials are maintained in stock in the warehouse of MetalWorks, but others need to be sourced from one or multiple suppliers. Accordingly, each work order is examined by a production engineer. The production engineer determines which raw materials are required in order to fulfill the work order. The production engineer annotates the work order with a list of required raw materials. Each raw material listed in the work order is later checked by a procurement officer. The procurement officer determines whether the required raw material is available in stock or it has to be ordered by accessing the specific catalog for that product line. If the material has to be ordered, the procurement officer consults the suppliers database, selects one or more suitable suppliers for the raw material and sends a request for quote to the selected suppliers. If more than one supplier is identified, the procurement officer selects the best quote out of the first three quotes received from the suppliers (the other quotes, if they arrive, are discarded), and emits a “material PO” for the selected supplier. This material PO is a PO for a raw material and is different from the customer PO. A material PO is a PO sent by MetalWorks to one of its suppliers, whereas a customer PO is a PO received by MetalWorks from one of its customers. Once all materials required to fulfill a work order are available, the production can start. The responsibility for the production of a work order is assigned to the same production engineer who previously examined the work order. The production engineer is responsible for scheduling the production. Once the product has been manufactured, it is checked by a quality inspector. Sometimes, the quality inspector finds a defect in the product and reports it to theproduction engineer. The production engineer then decides whether: (i) theproduct should undergo aminor fix; or(ii)theproduct should bediscarded and manufactured again.

USING SIGNAVIO.

Answer 1