Plan regeneration
On a periodic basis, you should regenerate the plan to synchronize all demands with up-to-date on-hand inventory, planned supply (such as purchase orders), and resource availability information. In most situations, you run the plan regeneration for a long horizon, such as one or two months. If you are using Scheduling, you will likely run the Scheduler with a shorter horizon, such as one or two days. The plan regeneration generates planned orders and exception messages. You can then respond to the exception messages and firm the planned orders into actual job orders, purchase orders, and other types of orders.