BOSS - what does « Production Surplus » or « Production Deficit » mean ?

“Production Surplus or Deficit” is calculated vis-à-vis your production, i.e. what you need.

More precisely, “Production Surplus” means that you need a “surplus” of production, i.e. that you must increase actual production compared to your production plan.

On the opposite, “Production Deficit” means that you need a “deficit” of production, i.e. that you must reduce actual production compared to your production plan.