How To Fix CK021 - Costing variants & and & would overwrite each other

SAP Error Message - Details

• Message type: E = Error

• Message class: CK - Product Costing Messages

• Message number: 021

• Message text: Costing variants & and & would overwrite each other

What causes this issue?

<DS:GLOS.costing_variant>Costing variants</> &V1& and &V2& have the
same <DS:GLOS.costing_type>costing type</> (&V3&) and the same
<DS:GLOS.valuation_variant>valuation variant</> (&V4&).

System Response

Cost estimates that use these costing variants would overwrite each
other.
&sys_admin&
Go into Customizing and check the settings in costing variants &V1& and
&V2&.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CK021 - Costing variants & and & would overwrite each other ?

  The SAP error message CK021 indicates that there is a conflict between costing variants in the system. Specifically, it means that two costing variants are set up in such a way that they would overwrite each other during the costing process. This typically occurs when the same costing variant is assigned to multiple scenarios or when there are overlapping settings that lead to ambiguity in the costing process.
  Cause:
  
  Duplicate Assignments: The same costing variant is assigned to multiple costing runs or scenarios, leading to potential conflicts.
  Overlapping Settings: Costing variants may have overlapping settings or parameters that cause them to interfere with each other.
  Configuration Issues: Incorrect configuration in the costing variant settings or in the related master data can lead to this error.
  
  Solution:
  To resolve the CK021 error, you can take the following steps:
  
  
  Review Costing Variants:
  
  Go to the configuration settings for costing variants in SAP (Transaction code: OKKN).
  Check the assignments of the costing variants and ensure that they are not overlapping or duplicated.
  
  
  
  Adjust Assignments:
  
  If you find that the same costing variant is assigned to multiple scenarios, consider reassigning them to avoid conflicts.
  Ensure that each costing variant is uniquely assigned to a specific costing run or scenario.
  
  
  
  Check Configuration:
  
  Review the configuration settings for the costing variants to ensure that they are set up correctly.
  Make sure that the parameters defined in the costing variants do not conflict with each other.
  
  
  
  Test Changes:
  
  After making adjustments, perform a test costing run to ensure that the error no longer occurs.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help resources for detailed guidance on configuring costing variants and resolving conflicts.
  
  
  
  Related Information:
  
  Costing Variants: Costing variants are used in SAP to define how costs are calculated for materials and products. They include settings for valuation methods, cost components, and other parameters.
  Costing Run: A costing run is a process in which costs are calculated for materials based on the defined costing variant.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CK11N (Create Cost Estimate), CK40N (Costing Run), and OKKN (Costing Variants) for managing costing processes.
  
  By following these steps and understanding the underlying causes, you should be able to resolve the CK021 error and ensure smooth costing operations in your SAP system.