How To Fix CO459 - Order is already confirmed - costing variant can no longer be changed

SAP Error Message - Details

• Message type: E = Error

• Message class: CO - PPC order processing messages

• Message number: 459

• Message text: Order is already confirmed - costing variant can no longer be changed

What causes this issue?

The <DS:GLOS.costing_variant>costing variant</> can only be changed as
long as the order has not incurred any actual costs.

System Response

Since the order has already been debited with costs during a Auftrag
<DS:GLOS.completion_confirmation>confirmation</>, you can no longer
change the costing variant.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CO459 - Order is already confirmed - costing variant can no longer be changed ?

  The SAP error message CO459 ("Order is already confirmed - costing variant can no longer be changed") typically occurs in the context of production orders or internal orders when you attempt to change the costing variant of an order that has already been confirmed. This is a safeguard in SAP to ensure the integrity of the cost calculations associated with the order.
  
  Cause:
  
  Order Confirmation: The primary cause of this error is that the order has already been confirmed. Once an order is confirmed, the costing variant is locked to maintain the accuracy of the cost calculations.
  Costing Variant: The costing variant defines how costs are calculated for the order. Changing it after confirmation could lead to inconsistencies in the cost data.
  System Settings: The system settings may restrict changes to certain fields after confirmation to prevent data integrity issues.
  
  
  Solution:
  
  Revoke Confirmation: If you need to change the costing variant, you may need to revoke