How To Fix KJ399 - Cost element & (line ID &) already used for line ID &

KJ399 - Overview

• Message type: E = Error

• Message class: KJ - Cost Object Controlling for Make-to-Order Production

• Message number: 399

• Message text: Cost element & (line ID &) already used for line ID &

What causes this issue?

You are attempting to update the <DS:GLOS.results_analysis_data>results
analysis data</> for <DS:GLOS.line_ID>line ID</> &V2& under results
analysis cost element &V1&. However, this cost element is already being
used for line ID &V3&. The data must be updated under separate cost
elements.

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?

Enter a different results analysis cost element for line ID &V2&.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message KJ399 - Cost element & (line ID &) already used for line ID & ?

  The SAP error message KJ399 indicates that a cost element is already being used in a specific context, which prevents the system from processing the transaction or operation you are attempting. This error typically arises in the context of controlling (CO) and can occur during various activities, such as posting costs, creating cost centers, or executing internal orders.
  
  Cause:
  
  Duplicate Usage: The cost element specified in the error message is already assigned to another line item or transaction in the system.
  Incorrect Configuration: There may be a configuration issue where the same cost element is incorrectly set up for multiple uses in a way that conflicts with the current operation.
  Data Entry Error: The user may have inadvertently entered the same cost element for multiple line items or transactions.
  
  
  Solution:
  
  Check Existing Assignments: Review the existing assignments of the cost element in the system. You can do this by navigating to the relevant transaction (e.g., cost