In the context of One-of-a-Kind Production (OKP), companies focus on creating unique products tailored to individual customer demands. This approach is driven by the need to stay competitive in a rapidly changing global market. However, OKP comes with its own set of challenges, especially in terms of product development and production planning. One of the key challenges in OKP is dealing with the inherent variability and uncertainty associated with producing custom products. Companies operating in this model must be highly adaptable, capable of responding quickly to changes in customer demand and market conditions, and efficient in their product development processes. They often have to manage multiple design processes concurrently to meet diverse customer requirements.