Definition /logic of SOP "constrained forecast" measure

Team, can you please provide seeded definition or logic of SOP "Constrained Forecast" measure.

We see there is a high resource requirements and utilization percentage, it means the demand can’t be met.

We are expecting based on the resource availability the constrained forecast will get computed.

We notice consensus and constraint forecast remains the same.

As per observation looks like constraint forecast is greater of (sales order, forecast) and ITS NOT THE CONSTRAINED NUMBER BASED ON RESOURCE AVAILABILITY.

So, if you brief me the logic of "constraint forecast" measure value it will be helpful.