A Warning message in AFT Arrow

Full Message is:

Junction X is downstream of a choking point. Static/stagnation properties cannot be calculated at junction.

Only occurs at pressure type junctions (e.g., Assigned Pressure, Tank, Spray Discharge). When sonic choking occurs at a junction with a fixed pressure, there is no way to calculate a velocity downstream of the choke point. This means that it is not possible to determine static conditions if you have specified stagnation at the junction, and vice versa. All other results for the model are valid except for the static/stagnation pressure, temperature, and enthalpy at the junction.