I have found tracing to be very useful when troubleshooting problems. Tracing (or session-based logging) lets you activate detailed logging for specific customers. The system I worked on processed SMS messages for mobiles. There you could enable tracing on a specific mobile phone number, and whenever that subscriber sent an SMS, you got more detailed logs for everything affecting that SMS. Really a great tool. I&#x27;ve described it in more detail here: <a href="http:&#x2F;&#x2F;henrikwarne.com&#x2F;2014&#x2F;01&#x2F;21&#x2F;session-based-logging&#x2F;" rel="nofollow">http:&#x2F;&#x2F;henrikwarne.com&#x2F;2014&#x2F;01&#x2F;21&#x2F;session-based-logging&#x2F;</a>