How To Fix CNV644 - Build-up of individual matchcode pool tables was not confirmed

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV - Conversion: Messages for Conversion Services (CNCC)

• Message number: 644

• Message text: Build-up of individual matchcode pool tables was not confirmed

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 CNV644 - Build-up of individual matchcode pool tables was not confirmed ?

  The SAP error message "CNV644 Build-up of individual matchcode pool tables was not confirmed" typically occurs during the data migration process, particularly when using the SAP Data Migration Workbench or during the execution of a conversion program. This error indicates that the system was unable to confirm the successful build-up of matchcode pool tables, which are used for efficient data retrieval.
  Causes:
  
  Incomplete Data Migration: The data migration process may not have completed successfully, leading to inconsistencies in the matchcode pool tables.
  Configuration Issues: There may be configuration issues in the system that prevent the matchcode pool from being built correctly.
  Authorization Issues: The user executing the migration may not have the necessary authorizations to create or modify matchcode pool tables.
  Database Issues: There could be underlying database issues, such as locks or corruption, that prevent the successful creation of the matchcode pool tables.
  Program Errors: There may be bugs or errors in the migration program itself that lead to this message.
  
  Solutions:
  
  Check Migration Logs: Review the logs generated during the migration process to identify any specific errors or warnings that may provide more context about the failure.
  Re-run the Migration: If the migration was interrupted or incomplete, try re-running the migration process to see if the issue resolves itself.
  Verify Configuration: Ensure that all necessary configurations for the matchcode pool are correctly set up in the system.
  Check Authorizations: Verify that the user executing the migration has the appropriate authorizations to create and modify matchcode pool tables.
  Database Health Check: Perform a health check on the database to ensure there are no locks or corruption issues. You may need to consult with your database administrator.
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error message or provide patches or updates to the migration program.
  Contact SAP Support: If the issue persists after trying the above solutions, consider reaching out to SAP Support for further assistance.
  
  Related Information:
  
  Matchcode Pool: A matchcode pool is a database structure used in SAP to facilitate fast searches for data records. It is particularly useful in scenarios where large volumes of data are involved.
  Data Migration Workbench: This is a tool provided by SAP to assist in the migration of data from legacy systems to SAP systems.
  SAP Notes and Knowledge Base Articles: Always check for the latest SAP Notes related to your version of SAP and the specific migration tools you are using, as they may contain important updates or fixes.
  
  By following these steps, you should be able to diagnose and resolve the issue related to the error message CNV644.