There are a few ways that you can troubleshoot demand. The first way is to look at your sales data over time. This will help you to identify any trends in customer behavior. If you see a decrease in demand, you can take steps to correct it. Another way to troubleshoot demand is to talk to your customers directly. Ask them why they are no longer buying your product or service. This feedback can be invaluable in helping you to adjust your offerings. Finally, keep an eye on your competition. If they are starting to gain market share, it could be an indication that your demand is slipping.