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MRP most frequently used exceptions


The planning engine issues exception messages to draw your attention to situations that may need you to perform an action. (e.g. check past due sales orders, release work orders or planned orders, etc.) The most frequently used exceptions are listed below and sorted by exception types.

Projects/tasks related exceptions

  • Items with a shortage in a project/task: This exception message appears when projected available balance for a planning bucket is negative and is within the exception set Shortage Exceptions exception time period. The planning engine only uses the supplies and demands belonging to a project and task.
  • Items allocated across projects/tasks: This exception appears when the planning engine detects a supply belonging to one project/task which is pegged to a demand belonging to another project/task. It occurs when the two projects are in the same planning group
  • Items with excess inventory in a project/task: The planning generates this message when projected available balance for a bucket is greater than the exception set Excess Quantity value for the item and within the exception set Excess Exceptions exception time period. The planning engine only uses the supplies and demands belonging to a project and task

Shortages and excess related exceptions

  • Items with a shortage: This exception message appears when projected available balance for a planning bucket is negative and is within the exception set Shortage Exceptions exception time period. Projected available balance is:
    (Previous bucket projected available balance) + (Sum of supply quantities with due date in this planning time bucket) - (Sum of demand quantities with due date in this planning time bucket.)
  • Items below safety stock: This exception message appears when projected available balance for a planning bucket is below the specified safety stock level for the planning bucket.
  • Items with excess inventory: The planning generates this message when projected available balance for a bucket is greater than the exception set Excess Quantity value for the item and within the exception set Excess Exceptions exception time period

Late sales orders

  • Past due sales orders: This exception message appears for past due sales order lines. A past due sales order line is a sales order line with a schedule date earlier than the plan horizon start date.

Resource capacity

  • Resource overloaded: This exception message appears when, in a planning time bucket, both the resource required capacity is more than the resource available capacity and the load ratio is more than the exception set Over-utilization. Load ratio = (Required Capacity/Available Capacity) * 100

Reschedules related exceptions

  • Past due orders: This exception message appears when the planning engine detects supply orders and planned orders which have order (start) dates and due dates in the past (before the planning horizon start date).
  • Orders to be rescheduled out: This exception message appears when the planning engine suggests that planner reschedules an existing supply order (scheduled receipt) to a later date to avoid carrying excess inventory
  • Orders to be cancelled: This exception message appears when the planning engine suggests that the planner cancels an existing supply order.
  • Orders to be rescheduled in: This exception message appears when the planning engine suggests that the planner reschedules an existing supply order to an earlier date.
  • Orders with compression days: This exception message appears when the planning engine detects that a supply order needs to be completed in less time that its minimum processing time in order for it to meet a demand. If the planning engine plans the order

Items related exceptions

  • Items with expired lot: This exception appears when the planning engine detects a potential expired lot
  • Items with no activity: This exception appears when the planning engine detects an item in an organization with no demand and no supply throughout the planning horizon.

 
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