Absolutely, that's a common practice for many software certifications, including JDA Demand Planning. Prerequisites help ensure that candidates have a foundational understanding of relevant concepts and are adequately prepared to undertake the certification training and exam. These prerequisites may include:

1. **Supply Chain Management Knowledge**: Some certifications may require candidates to have a basic understanding of supply chain management principles, processes, and terminology. This knowledge is important as JDA Demand Planning is a supply chain software solution.

2. **Experience with JDA Demand Planning**: Certain certifications might expect candidates to have practical experience using JDA Demand Planning software. This ensures that candidates are familiar with the tool's JDA Demand Planning certification training functionalities and can apply their knowledge effectively.

3. **Educational Background**: Depending on the certification level, there may be specific educational requirements. For more advanced certifications, candidates may need to have a relevant academic degree or professional qualifications.

4. **Work Experience**: Certification programs may specify a minimum number of years of work experience in supply chain management or related fields.

5. **Training Completion**: Some certifications may require candidates to complete specific training courses or workshops before they can attempt the certification exam.

It's important to thoroughly review the certification requirements and prerequisites before enrolling in a certification program. If you don't meet some of the prerequisites, consider gaining the necessary knowledge or experience through training, self-study, or on-the-job practice before pursuing the certification.

Remember that certification programs aim to validate and recognize individuals who have attained a certain level of expertise. By having prerequisites, the certification body ensures that certified professionals have the necessary skills to use the software effectively and contribute meaningfully to supply chain management processes.