How To Fix CNV_OM_PRESEL123 - Source &1 for task &2 not found

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 123

• Message text: Source &1 for task &2 not found

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.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_OM_PRESEL123 - Source &1 for task &2 not found ?

  The SAP error message CNV_OM_PRESEL123 typically indicates that a specific source for a task in the context of a conversion or migration process is not found. This error is often encountered during data migration activities, particularly when using SAP's tools for data conversion or migration, such as the SAP S/4HANA Migration Cockpit or other data migration tools.
  Cause:
  
  Missing Source Data: The source data that is expected for the specified task is not available in the system. This could be due to incomplete data extraction or incorrect configuration.
  Incorrect Task Configuration: The task may not be properly configured, leading to the system being unable to locate the required source.
  Data Mapping Issues: There may be issues with how the data is mapped from the source to the target, causing the system to fail in finding the necessary source data.
  Transport Issues: If the task or related objects were transported from another system, there may be inconsistencies or missing objects in the target system.
  
  Solution:
  
  Check Source Data: Verify that the source data for the specified task exists in the system. Ensure that the data extraction process has been completed successfully.
  Review Task Configuration: Go through the configuration of the task to ensure that it is set up correctly. Check for any missing parameters or incorrect settings.
  Data Mapping Verification: Review the data mapping to ensure that all necessary fields are correctly mapped and that there are no discrepancies.
  Transport Consistency: If the task was transported, check for any missing objects or inconsistencies in the target system. Ensure that all necessary components are present.
  Logs and Traces: Check the logs and traces for more detailed error messages that can provide additional context about the issue.
  Consult Documentation: Refer to SAP documentation or notes related to the specific migration or conversion process you are using for any known issues or additional troubleshooting steps.
  
  Related Information:
  
  SAP Notes: Search for relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found.
  SAP Support: If the issue persists and you are unable to resolve it, consider reaching out to SAP Support for assistance.
  
  By following these steps, you should be able to identify the root cause of the error and implement a solution to resolve it.