How To Fix KOSA204 - Costing not possible - routing header unit of measure changed

SAP Error Message - Details

• Message type: E = Error

• Message class: KOSA - Product Cost Collector

• Message number: 204

• Message text: Costing not possible - routing header unit of measure changed

What causes this issue?

You are attempting to create a preliminary cost estimate for a product
cost collector of a repetitive manufacturing material. The repetitive
manufacturing profile specifies that reporting point processing is
active.
In preliminary costing, when the routing is changed the reporting point
structure of the associated run schedule headers is converted.
However, the unit of measure in the routing header was changed. This
means it is not possible to convert to the new reporting point
structure.

System Response

The system does not execute preliminary costing.

How to fix this error?

Change the header unit of measure back to what it was. Then perform
preliminary costing again.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message KOSA204 - Costing not possible - routing header unit of measure changed ?

  The SAP error message KOSA204, which states "Costing not possible - routing header unit of measure changed," typically occurs during the costing process in SAP when there is a mismatch between the unit of measure (UoM) defined in the routing and the unit of measure used in the material master or the production order.
  Cause:
  
  Unit of Measure Mismatch: The routing for the material has a different unit of measure than what is defined in the material master or the production order. For example, if the routing is set up with a unit of measure in pieces (PC) but the material master is set up in kilograms (KG), this discrepancy will trigger the error.
  Changes in Routing: If the routing has been changed after the material was created or after the last costing run, this can lead to inconsistencies.
  Costing Variant Settings: The costing variant may not be configured to handle the unit of measure changes appropriately.
  
  Solution:
  
  
  Check Routing and Material Master: 
  
  Go to the routing (transaction code CA03) and check the unit of measure used in the routing header.
  Go to the material master (transaction code MM03) and verify the unit of measure defined there.
  Ensure that both the routing and material master are using the same unit of measure.
  
  
  
  Adjust Routing or Material Master: 
  
  If there is a mismatch, you may need to adjust either the routing or the material master to ensure they are consistent.
  If the routing needs to be changed, you can do this using transaction code CA02.
  
  
  
  Re-run Costing: After making the necessary adjustments, re-run the costing process to see if the error persists.
  
  
  Check Costing Variant: 
  
  Review the costing variant settings (transaction code OKKN) to ensure that it is set up correctly to handle the units of measure.
  
  
  
  Consult Documentation: If the issue persists, consult SAP documentation or reach out to your SAP support team for further assistance.
  
  
  Related Information:
  
  Transaction Codes:
  
  CA03: Display Routing
  MM03: Display Material Master
  CA02: Change Routing
  OKKN: Costing Variants
  
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance.
  User Roles: Ensure that you have the necessary permissions to view and edit routing and material master data.
  
  By following these steps, you should be able to resolve the KOSA204 error and successfully complete the costing process.