The truth is hidden in the important details. It is the basis for justifying the need to change and improve.
The “important details” of the value stream map tells you how far the order travels, how much time is spent at each step in the process, who touches the order, how long does the process take, what quantity is needed, what equipment is used, how much inventory in process, change over time per customer order, how long does it take to pull all the needed materials together.