How To Fix CK865 - Co-product & / & is defined more than once in the BOM

SAP Error Message - Details

• Message type: E = Error

• Message class: CK - Product Costing Messages

• Message number: 865

• Message text: Co-product & / & is defined more than once in the BOM

What causes this issue?

Co-product &V1& in plant &V2& has been defined in the BOM as output
material more than once. The distribution of the costs to the
co-products is only possible, however, if they are defined just once as
output material in the BOM.

System Response

Co-product &V1& is only valuated once in the itemization of the cost
estimate.

How to fix this error?

Change the BOM for material &V3& (BOM &V4&).

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CK865 - Co-product & / & is defined more than once in the BOM ?

  The SAP error message CK865 indicates that there is a problem with the Bill of Materials (BOM) configuration for a co-product. Specifically, it means that the same co-product is defined more than once in the BOM for a particular material. This can lead to confusion in production planning and costing, as SAP expects each co-product to be uniquely defined within a BOM.
  Cause:
  
  Duplicate Entries: The most common cause of this error is that the same co-product has been entered multiple times in the BOM for a material.
  Incorrect BOM Configuration: There may be an error in how the BOM was configured, leading to the same co-product being listed more than once.
  Data Migration Issues: If data was migrated from another system or if there were manual entries, duplicates may have been inadvertently created.
  
  Solution:
  
  
  Check the BOM: 
  
  Go to the BOM transaction (e.g., CS03) and display the BOM for the material in question.
  Look for the co-product that is causing the error and check if it appears more than once.
  
  
  
  Remove Duplicates:
  
  If you find duplicate entries, you will need to delete the extra entries. You can do this by using the BOM change transaction (e.g., CS02) to modify the BOM and remove the duplicates.
  
  
  
  Validate BOM:
  
  After making changes, validate the BOM to ensure that there are no further issues. You can use transaction CK11N to re-evaluate the costing for the material and check for any errors.
  
  
  
  Check for Related BOMs:
  
  If the material has multiple BOMs (for different plant or usage), ensure that the same co-product is not duplicated across these BOMs as well.
  
  
  
  Consult Documentation: 
  
  If you are unsure about the correct configuration of co-products in your BOM, refer to SAP documentation or consult with a functional consultant who specializes in SAP PP (Production Planning) or SAP CO (Controlling).
  
  
  
  Related Information:
  
  Co-Products: In SAP, co-products are products that are produced simultaneously in a manufacturing process. They are typically defined in the BOM and can have their own costs and quantities.
  BOM Structure: Understanding the structure of a BOM and how co-products are defined is crucial for effective production planning and costing.
  SAP Transactions: Familiarize yourself with relevant SAP transactions such as CS01 (Create BOM), CS02 (Change BOM), CS03 (Display BOM), and CK11N (Create Cost Estimate with Quantity Structure) for managing BOMs and cost estimates.
  
  By following these steps, you should be able to resolve the CK865 error and ensure that your BOM is correctly configured for co-products.