How To Fix CNV_20000156 - Unable to write database records in table CNV_20000_CCLED

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_20000 - Messages for fiscal year change

• Message number: 156

• Message text: Unable to write database records in table CNV_20000_CCLED

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 CNV_20000156 - Unable to write database records in table CNV_20000_CCLED ?

  The SAP error message CNV_20000156, which indicates "Unable to write database records in table CNV_20000_CCLED," typically arises during data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or similar tools. This error can occur for several reasons, and understanding the cause is crucial for finding a solution.
  Possible Causes:
  
  Data Integrity Issues: The data being migrated may violate constraints or rules defined in the target table (e.g., primary key violations, foreign key constraints).
  Insufficient Authorizations: The user executing the migration may not have the necessary permissions to write to the specified table.
  Database Locking: The table may be locked by another process, preventing the current operation from completing.
  Technical Issues: There may be issues with the database connection, such as timeouts or connectivity problems.
  Incorrect Configuration: The migration settings or mapping may not be correctly configured, leading to attempts to write invalid data.
  
  Solutions:
  
  
  Check Data Integrity:
  
  Review the data being migrated for any inconsistencies or violations of constraints.
  Ensure that all required fields are populated and that data types match the target table's schema.
  
  
  
  Verify Authorizations:
  
  Ensure that the user executing the migration has the necessary authorizations to write to the CNV_20000_CCLED table.
  Check roles and permissions in the SAP system.
  
  
  
  Check for Locks:
  
  Use transaction codes like SM12 to check for any locks on the CNV_20000_CCLED table.
  If locks are found, determine the process holding the lock and resolve it.
  
  
  
  Review Database Connection:
  
  Check the database connection settings and ensure that there are no connectivity issues.
  Look for any error messages in the system logs that might indicate a problem with the database.
  
  
  
  Configuration Review:
  
  Review the migration configuration and mapping settings to ensure they are correct.
  Make sure that the source and target mappings are properly defined.
  
  
  
  Consult SAP Notes:
  
  Search for relevant SAP Notes that may address this specific error. SAP frequently releases notes that provide fixes or workarounds for known issues.
  
  
  
  Debugging:
  
  If the issue persists, consider enabling debugging or logging to capture more detailed information about the error.
  This can help identify the exact point of failure during the migration process.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with transaction codes like SE11 (Data Dictionary), SE37 (Function Modules), and SM21 (System Log) for troubleshooting.
  SAP Community: Engage with the SAP Community or forums for insights from other users who may have encountered similar issues.
  SAP Support: If the problem cannot be resolved internally, consider reaching out to SAP Support for assistance.
  
  By systematically addressing these potential causes and implementing the suggested solutions, you should be able to resolve the CNV_20000156 error and successfully write records to the CNV_20000_CCLED table.