# Integrated Multilevel Production Planning Solution According to Industry 5.0 Principles
## 3 Integrated Production Planning System According to Industry 5.0 Principles
### Data Collection
The questions were designed to elicit detailed information on the challenges faced in current processes, the impact on departmental operations, goals for future systems, envisioned interactions with new systems, and desired features and capabilities. The questions themselves were developed through a collaborative process involving experts in lean management and business process optimization, ensuring that they were both incisive and relevant to the varied domains of our respondents. Detailed responses were obtained through in-depth interviews [54; 55] conducted with key personnel from various departments, such as production, logistics, operations management, and IT. These interviews were semistructured, allowing flexibility in the discussion while ensuring that all key topics were covered. The five questions discussed during the interviews were as follows:  
1. What are the most significant challenges you face in the current production planning and scheduling process? Please provide specific details and examples. 2. How does the current process impact your department's operations and overall efficiency? Explain the specific ways in which the existing system affects your team's ability to perform their tasks effectively and efficiently. 3. What specific goals do you hope to achieve with a future system based on Industry 5.0 principles? Describe the desired outcomes or improvements you anticipate from implementing such a system. How do you envision the interaction between your department and the new system? Describe the ideal working relationship between your team and the proposed system, considering factors such as data input, decision-making processes, and overall collaboration. 5. What features or capabilities would you like to see in the new system to support your department's operations and goals? Provide a comprehensive list of functionalities and attributes that you believe would be beneficial for your team to have in the new system to improve their operations and help them achieve their goals more effectively. To enhance the validity and reliability of the data collected, a pilot test of the interview protocol was conducted with a small group of participants similar to our target respondents. This pilot phase allowed us to refine the questions, adjust the flow of the conversation, and address any potential ambiguities. Feedback from the pilot participants was instrumental in fine-tuning the interview guide to better elicit detailed and meaningful responses. During the interview execution phase, each session was conducted in a controlled environment to minimize distractions and ensure a focus on the discussion. Interviews were audio-recorded, with the consent of participants, and later transcribed verbatim to preserve the accuracy of the data. Analytically, the responses were subjected to a thematic analysis, where data were coded and categorized to identify recurring patterns, discrepancies, and unique insights. This coding was performed independently by multiple members of the research team to ensure intercoder reliability, and discrepancies were resolved through discussion and consensus. Through this comprehensive and multifaceted interview methodology, we were able to glean profound insights into the operational intricacies of the manufacturing process and the expectations for a future Industry 5.0-compliant system.