Once you’ve written your problem statement, it’s time to start scoping your system map.
The system boundary may be obvious within your problem statement, or you may have to make a decision on a starting point. This might be a geographical focus (e.g. East Africa), or a specific part of a system e.g. upstream food waste at the farm, vs downstream food waste by consumers.
It’s always possible to adjust your boundary later, but it is useful to draw some limits now to help you narrow in on the most fundamental components in your system.