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

KOSA204 - Overview

• 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