Product development plays the key role in defining all product properties and benefits. There is a need for appropriate supporting methods that are able to serve and to satisfy multi-criteria and multi-domain requirements. These requirements usually go beyond function fulfilment. Developing mechatronical systems raises the requirements for the applied product development methods, because of the high number of linked elements from different technical und physical domains. Integrating and combining solutions from different domains does not only increase the number of possible solutions, but also the complexity of such systems. Product development methods need to be able to handle these requirements appropriately in order to support the designer within the product development process.