How effect work center absence to Production planning (Manufacturing)

Hi all, I need a explanation about work center absence and production planing. When record work center absence (future absence) how it effect to the planned production orders.

Its not effect when just refresh the production order.

Conditions:

Critical load =100% that WC

Thanks,

The planning of production orders would take into account the reduction of capacity in a finite situation. You would need to refresh any orders already consuming the time.