How To Fix CNV_IUUC_TCR_MAIN019 - Preprocessing activity in source system failed

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_IUUC_TCR_MAIN - transactional consistent replication main package

• Message number: 019

• Message text: Preprocessing activity in source system failed

What causes this issue?

The preprocessing activity has stopped due to an unknown error.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_IUUC_TCR_MAIN019 - Preprocessing activity in source system failed ?

  The SAP error message CNV_IUUC_TCR_MAIN019 indicates that a preprocessing activity in the source system has failed during a data migration or conversion process, typically related to the SAP Landscape Transformation (SLT) or SAP Data Migration projects. This error can occur for various reasons, and understanding the cause is crucial for resolving it.
  Possible Causes:
  
  Data Consistency Issues: There may be inconsistencies in the data being processed, such as missing or invalid entries.
  Configuration Errors: Incorrect configuration settings in the source system or in the migration tool can lead to failures.
  Authorization Issues: The user executing the migration may not have the necessary authorizations to perform the required actions.
  Technical Errors: There could be underlying technical issues, such as database connectivity problems, system resource limitations, or software bugs.
  Locking Issues: If the data being processed is locked by another transaction, it can lead to a failure in the preprocessing step.
  
  Solutions:
  
  Check Logs: Review the detailed logs associated with the error message. This can provide insights into what specifically caused the failure.
  Data Validation: Ensure that the data in the source system is consistent and valid. Look for any anomalies or missing data that could cause the process to fail.
  Configuration Review: Verify the configuration settings in both the source system and the migration tool. Ensure that all parameters are set correctly.
  User Authorizations: Check the authorizations of the user executing the migration. Ensure that they have the necessary permissions to access and modify the data.
  System Resources: Monitor system resources (CPU, memory, disk space) to ensure that the system is not under heavy load or running out of resources.
  Retry the Process: Sometimes, simply retrying the preprocessing activity can resolve transient issues.
  Consult SAP Notes: Look for relevant SAP Notes or Knowledge Base Articles that may address this specific error. SAP frequently updates its documentation with solutions for known issues.
  
  Related Information:
  
  SAP Documentation: Refer to the official SAP documentation for the specific migration tool you are using (e.g., SAP S/4HANA Migration Cockpit, SAP Data Services).
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found effective.
  SAP Support: If the issue persists and you cannot find a resolution, consider reaching out to SAP Support for assistance.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.