How To Fix MDC_PROC_CONFIG_MSG039 - Alternative key already exists

SAP Error Message - Details

• Message type: E = Error

• Message class: MDC_PROC_CONFIG_MSG - Message class for process configuration

• Message number: 039

• Message text: Alternative key already exists

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 MDC_PROC_CONFIG_MSG039 - Alternative key already exists ?

  The SAP error message MDC_PROC_CONFIG_MSG039 with the description "Alternative key already exists" typically occurs in the context of Master Data Configuration, particularly when dealing with alternative keys in the SAP system. This error indicates that you are trying to create or modify an alternative key that already exists in the system, which violates the uniqueness constraint for alternative keys.
  Cause:
  
  Duplicate Entry: The most common cause of this error is that the alternative key you are trying to create or modify already exists in the system for the same object or entity.
  Data Migration: If you are migrating data from another system or performing a bulk upload, there may be duplicate alternative keys in the data being imported.
  Configuration Issues: There may be issues in the configuration settings that allow for duplicate keys to be attempted.
  
  Solution:
  
  Check Existing Keys: Before creating a new alternative key, check the existing keys in the system to ensure that the key you are trying to create does not already exist. You can do this by navigating to the relevant configuration area in SAP.
  Modify Existing Key: If the alternative key already exists and you need to make changes, consider modifying the existing key instead of creating a new one.
  Data Cleanup: If you are migrating data, ensure that your data does not contain duplicates. Clean up the data before attempting to import it into SAP.
  Error Handling: Implement error handling in your data import process to catch and manage duplicate key errors gracefully.
  Consult Documentation: Review SAP documentation or help resources for specific guidelines on managing alternative keys in your version of SAP.
  
  Related Information:
  
  Transaction Codes: You may need to use specific transaction codes to view or manage alternative keys, such as MDC (Master Data Configuration) or other relevant transaction codes depending on your SAP module.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP Notes can provide additional context or solutions.
  Support: If the issue persists, consider reaching out to SAP support or your internal SAP support team for assistance.
  
  By following these steps, you should be able to resolve the error and manage alternative keys effectively in your SAP system.