The most important History exceptions that will require immediate actions are as follows:
- Demand Filter High - period of high demand above the established limit.
- Demand Filter Low - period of low demand below the established limit.
- Tracking Signal High - The item trends up at a high rate for several periods.
- Tracking Signal Low - The item trends down at a high rate for several periods.
- Service Level Check - The item did not achieve its service level objective last period
- Infinity Check - The active item has a zero forecast and had demand last period.