How To Fix CM_EHFND_REQ147 - OEL with duplicate key found: &1;&2;&3;&4

SAP Error Message - Details

• Message type: E = Error

• Message class: CM_EHFND_REQ - Messages for Compliance Requirement

• Message number: 147

• Message text: OEL with duplicate key found: &1;&2;&3;&4

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CM_EHFND_REQ147 - OEL with duplicate key found: &1;&2;&3;&4 ?

  The SAP error message CM_EHFND_REQ147 OEL indicates that a duplicate key has been found in a specific context, which is often related to data integrity issues in the system. This error typically arises when there are attempts to insert or update records in a database table where a unique constraint is violated due to the presence of duplicate entries.
  Cause:
  
  Duplicate Entries: The most common cause of this error is that the system is trying to insert or update a record that already exists in the database with the same key values. The key values are represented by &1, &2, &3, and &4, which are placeholders for the actual key fields that are causing the conflict.
  Data Migration Issues: If data has been migrated from another system or if there have been bulk uploads, it is possible that duplicates were introduced during this process.
  Concurrent Processing: If multiple processes are trying to insert or update the same record simultaneously, it can lead to this error.
  Incorrect Configuration: Sometimes, incorrect configuration in the application or data model can lead to attempts to create duplicate records.
  
  Solution:
  
  Identify Duplicates: Use SQL queries or SAP transaction codes (like SE16 or SE11) to check the database table for existing records with the same key values. This will help you identify the duplicates.
  Data Cleanup: If duplicates are found, you may need to clean up the data by removing or merging duplicate records, depending on the business requirements.
  Adjust Data Entry Processes: Review and adjust the processes that lead to data entry to ensure that duplicates cannot be created in the future. This may involve adding validation checks or modifying user interfaces.
  Locking Mechanisms: If concurrent processing is an issue, consider implementing locking mechanisms to prevent multiple processes from trying to modify the same record at the same time.
  Review Configuration: Check the configuration settings related to the data model to ensure that they are set up correctly and that unique constraints are properly defined.
  
  Related Information:
  
  Transaction Codes: Use transaction codes like SE11 (Data Dictionary), SE16 (Data Browser), or SE80 (Object Navigator) to investigate the database tables and structures involved.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP Notes can provide additional context or solutions specific to your version of SAP.
  Debugging: If the issue persists, consider debugging the application to trace where the duplicate key violation is occurring in the code.
  
  By following these steps, you should be able to resolve the CM_EHFND_REQ147 OEL error and prevent it from occurring in the future.