How To Fix CNV_OM_PRESEL170 - The following tasks have been selected for cancellation

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_OM_PRESEL - Messages for LT Object Based Preselection

• Message number: 170

• Message text: The following tasks have been selected for cancellation

What causes this issue?

A job scheduled by the OBT preselection may process several preselection
tasks. If a task has been selected to request its cancellation then also
all tasks are affected which are handled by the job processing the
selected task.

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_OM_PRESEL170 - The following tasks have been selected for cancellation ?

  The SAP error message CNV_OM_PRESEL170 typically occurs in the context of the SAP Conversion or Migration process, particularly when using the SAP S/4HANA Migration Cockpit or similar tools. This error indicates that certain tasks have been selected for cancellation, which may be due to various reasons related to the migration process.
  Causes:
  
  Task Dependencies: The tasks that are being canceled may have dependencies on other tasks that are not completed or are in an inconsistent state.
  Data Issues: There may be issues with the data being processed, such as missing or inconsistent data that prevents the task from being completed successfully.
  Configuration Errors: Incorrect configuration settings in the migration cockpit or related tools can lead to tasks being marked for cancellation.
  User Intervention: A user may have manually selected tasks for cancellation due to errors or warnings encountered during the migration process.
  
  Solutions:
  
  Review Task Logs: Check the logs for the specific tasks that are marked for cancellation. This can provide insights into why they were canceled and what issues need to be addressed.
  Resolve Data Issues: If the cancellation is due to data inconsistencies, ensure that the data is cleaned and validated before re-running the migration tasks.
  Check Dependencies: Ensure that all prerequisite tasks are completed successfully before attempting to run dependent tasks.
  Reconfigure Settings: Review the configuration settings in the migration cockpit to ensure they are set up correctly for the tasks you are trying to execute.
  Manual Restart: If the tasks were canceled due to user intervention, you may need to manually restart the tasks that were canceled after addressing any underlying issues.
  Consult Documentation: Refer to SAP documentation or notes related to the specific migration process you are using for additional troubleshooting steps.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error message or provide guidance on similar issues.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found effective.
  Migration Cockpit Documentation: Review the official SAP documentation for the Migration Cockpit, as it may contain specific troubleshooting steps for common errors.
  
  If the issue persists after trying the above solutions, consider reaching out to SAP support for further assistance.