How To Fix CK304 - Costing variants &1 and &2 have the same val. variant and costing type

SAP Error Message - Details

• Message type: E = Error

• Message class: CK - Product Costing Messages

• Message number: 304

• Message text: Costing variants &1 and &2 have the same val. variant and costing type

What causes this issue?

You are costing material &v3& in plant &v4& with costing variant &v1&.
The system has determined that there is already a cost estimate for
this material with costing variant &v2&.
The problem is that the two costing variants have the same key (the
same combination of valuation variant and costing type). This means
that the results of cost estimates that use these costing variants will
overwrite each other.

System Response

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

How to fix this error?

If you do not want this to happen, you can go into Customizing for
Product Cost Controlling and reset the <LS>Saving allowed</> indicator
in one of these costing variants.
You could also delete one of the costing variants. However, to do this
you must first delete all the cost estimates (in Reorganization) that
were created with that costing variant.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CK304 - Costing variants &1 and &2 have the same val. variant and costing type ?

  The SAP error message CK304 indicates that there is a conflict between two costing variants in the system. Specifically, it means that the two costing variants you are trying to use have the same valuation variant and costing type, which is not allowed in SAP.
  Cause:
  
  Duplicate Configuration: The error typically arises when two costing variants are configured with identical valuation variants and costing types. This can happen if the configuration was not done carefully or if there was an attempt to copy an existing costing variant without changing its parameters.
  Incorrect Assignment: It may also occur if the costing variants are incorrectly assigned to the same cost object or if there is a misconfiguration in the costing setup.
  
  Solution:
  To resolve the CK304 error, you can take the following steps:
  
  
  Check Costing Variants:
  
  Go to the configuration of costing variants in SAP (Transaction code: OKKN).
  Identify the costing variants mentioned in the error message (&1 and &2).
  Review their settings, particularly the valuation variant and costing type.
  
  
  
  Modify or Create New Costing Variant:
  
  If you find that both costing variants have the same valuation variant and costing type, you can either:
  
  Modify one of the costing variants to use a different valuation variant or costing type.
  Create a new costing variant that has a unique combination of valuation variant and costing type.
  
  
  
  
  
  Reassign Costing Variants:
  
  If necessary, reassign the costing variants to the relevant cost objects or processes to ensure that they do not conflict.
  
  
  
  Testing:
  
  After making the changes, test the costing process again to ensure that the error no longer occurs.
  
  
  
  Related Information:
  
  Costing Variants: Costing variants in SAP are used to define how costs are calculated for materials and products. They include settings for valuation methods, costing types, and other parameters.
  Valuation Variants: Valuation variants determine how the system values materials and products during the costing process. They can include different methods for valuing inventory, such as standard price, moving average price, etc.
  Costing Types: Costing types define the purpose of the costing, such as whether it is for standard costing, actual costing, or other purposes.
  
  Additional Tips:
  
  Always back up your configuration before making changes.
  Consult with your SAP functional consultant or team if you are unsure about making changes to costing variants.
  Review SAP documentation or help resources for more detailed guidance on costing configuration.
  
  By following these steps, you should be able to resolve the CK304 error and ensure that your costing variants are correctly configured.