How To Fix CNV_PE334 - RELV_IDENT '&1' already exists in KB_REL

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_PE - General messages for posting engine

• Message number: 334

• Message text: RELV_IDENT '&1' already exists in KB_REL

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_PE334 - RELV_IDENT '&1' already exists in KB_REL ?

  The SAP error message CNV_PE334 indicates that there is a conflict with a record in the Knowledge Base (KB) related to the conversion process. Specifically, the message states that the record identified by RELV_IDENT '&1' already exists in the table KB_REL. This typically occurs during data migration or conversion processes, particularly when using SAP's Conversion Tools.
  Cause:
  The error is usually caused by one of the following:
  
  Duplicate Entries: The record you are trying to insert or update already exists in the KB_REL table. This can happen if the same data is being processed multiple times or if there is an issue with the data preparation phase.
  Incorrect Data Preparation: If the data being migrated has not been properly cleaned or prepared, it may lead to attempts to insert duplicate records.
  Configuration Issues: There may be issues with the configuration of the conversion tools or the migration process that lead to this error.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check for Duplicates:
  
  Query the KB_REL table to see if the record with the specified RELV_IDENT already exists. You can use a SQL query like:
  SELECT * FROM KB_REL WHERE RELV_IDENT = '<value_of_&1>';
  
  If it exists, determine if it is valid or if it needs to be removed or updated.
  
  
  
  Data Cleanup:
  
  Review the data you are trying to migrate. Ensure that there are no duplicates in your source data that could lead to this error.
  Clean up the data to remove any duplicates before attempting the migration again.
  
  
  
  Adjust Migration Process:
  
  If the migration process is set to run multiple times, ensure that it is designed to handle existing records appropriately (e.g., by updating instead of inserting).
  
  
  
  Consult Documentation:
  
  Review the SAP documentation related to the specific conversion tool you are using. There may be specific guidelines or best practices for handling such errors.
  
  
  
  Contact SAP Support:
  
  If the issue persists and you cannot identify the cause, consider reaching out to SAP support for assistance. They may provide insights specific to your system configuration or the version of the tools you are using.
  
  
  
  Related Information:
  
  KB_REL Table: This table is part of the Knowledge Base used in SAP for various conversion and migration processes. Understanding its structure and purpose can help in troubleshooting.
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional context or solutions.
  Migration Tools: Familiarize yourself with the specific SAP migration tools you are using (e.g., SAP S/4HANA Migration Cockpit, SAP Data Services) as they may have specific logs or error handling mechanisms.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.