How To Fix KE205 - A derivation rule has already been defined with the name &

SAP Error Message - Details

• Message type: E = Error

• Message class: KE -

• Message number: 205

• Message text: A derivation rule has already been defined with the name &

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message KE205 - A derivation rule has already been defined with the name & ?

  The SAP error message KE205 indicates that there is an attempt to create a derivation rule in the Controlling (CO) module with a name that already exists in the system. This typically occurs when you are trying to define a new derivation rule in the system, but a rule with the same name has already been defined.
  Cause:
  
  Duplicate Rule Name: The most common cause of this error is that the derivation rule you are trying to create has the same name as an existing rule. SAP does not allow duplicate names for derivation rules.
  Incorrect Configuration: There may be a misunderstanding in the configuration process, leading to attempts to create a rule that is already defined.
  
  Solution:
  
  
  Check Existing Rules: 
  
  Go to the transaction code KEDR (or the relevant transaction for managing derivation rules) and check the list of existing derivation rules.
  Look for the rule with the name you are trying to create. If it exists, you can either modify it or delete it if it is no longer needed.
  
  
  
  Rename the New Rule: 
  
  If you need to create a new derivation rule, consider using a different name that does not conflict with existing rules.
  
  
  
  Review Documentation: 
  
  Ensure that you are following the correct steps for creating derivation rules as per your organization's documentation or SAP best practices.
  
  
  
  Consult with Colleagues: 
  
  If you are unsure about the existing rules or their purposes, consult with colleagues or team members who may have worked on the configuration previously.
  
  
  
  Related Information:
  
  
  Transaction Codes: 
  
  KEDR: Used for maintaining derivation rules.
  KEDR1: Used for displaying derivation rules.
  
  
  
  SAP Notes: 
  
  Check SAP Notes for any specific issues or updates related to derivation rules in your version of SAP.
  
  
  
  Documentation: 
  
  Refer to the SAP Help Portal or your organization's SAP documentation for detailed guidance on managing derivation rules.
  
  
  
  Support: 
  
  If the issue persists and you cannot resolve it, consider reaching out to your SAP support team or consulting with SAP support for further assistance.
  
  
  
  By following these steps, you should be able to resolve the KE205 error and successfully manage your derivation rules in SAP.