In which legacy systems can the ES-S query and view orders?

The correct option indicates that the ES-S can query and view orders in multiple legacy systems, including both the Material Management System and the specific legacy systems D035A and D035K. This comprehensive approach reflects the integration capabilities of the ES-S, allowing it to access data from several sources instead of being limited to just one.

Understanding this is crucial in warehouse operations, as it showcases the versatility of the system in retrieving relevant order information from various legacy platforms. Such functionality ensures that users have a wider range of data at their fingertips, enabling better decision-making and operational efficiency. By being able to interact with D035A and D035K alongside the Material Management System, users can leverage historical data and existing processes that are vital for effective warehouse management.