Now that you’ve been introduced to the security module, you are ready to perform the security exercise.
To access the exercise material and the preconfigured exercise environment, you’ll need to have an SAP Learning Hub subscription. This subscription further grants you access to the Practice System for SAP Commerce Cloud.
The blog post: Hands-on Practice Systems: Your Path to Mastering SAP Commerce Cloud contains the information you’ll need to find/book the learning system. Just remember to search for "C4H34I" to find the Practice System entry for this course.
Only after you book the learning system and log into it (by following instructions in the related system setup guide) will you be able to access the exercise.
Once you finish the exercise, or should you encounter any issues during the process, you can refer to the following video.