Peter Hahn's E-Commerce-Solution is a customised extension of our core platform that has been specifically adapted to our customers' unique requirements. To enable this new item architecture, a special API for stock availability was introduced, which ensures real-time stock validation for catalogue-specific items. In addition, the discount structure within the shopping basket has been fundamentally revised by consolidating all discounts into a single order line instead of multiple discount lines to simplify processing and improve clarity. These improvements result in a powerful, fully customised E-Commerce-Solution that is seamlessly aligned with Peter Hahn's operating model and system architecture.