How To Fix CNV_OM_MWBGEN012 - Preselection tables for root tables added (indirect selection)

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_OM_MWBGEN - SLO: Messages for Object Based MBW Generation

• Message number: 012

• Message text: Preselection tables for root tables added (indirect selection)

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_OM_MWBGEN012 - Preselection tables for root tables added (indirect selection) ?

  The SAP error message CNV_OM_MWBGEN012 typically relates to issues encountered during the data migration process, particularly when using the SAP S/4HANA Migration Cockpit or similar tools. This error indicates that preselection tables for root tables have been added, which may lead to indirect selection issues.
  Cause:
  
  Data Model Changes: The error may arise due to changes in the data model where the root tables have been modified, and the preselection tables are not aligned with these changes.
  Configuration Issues: There may be configuration issues in the migration settings or the mapping of the data.
  Missing or Incorrect Data: The preselection tables may not contain the necessary data or may have incorrect entries that prevent the migration process from proceeding.
  Incompatibility: The version of the migration tool or the source system may not be compatible with the target system.
  
  Solution:
  
  Check Data Model: Review the data model to ensure that the root tables and preselection tables are correctly defined and aligned. Make sure that any changes in the data structure are reflected in the migration settings.
  Review Configuration: Go through the migration configuration settings to ensure that all necessary parameters are correctly set. This includes checking the mapping of fields and ensuring that all required fields are included.
  Validate Preselection Tables: Ensure that the preselection tables contain the correct and complete data. You may need to run validation checks or queries to confirm the integrity of the data.
  Update Migration Tool: If you are using an older version of the migration tool, consider updating it to the latest version to ensure compatibility and access to the latest features and bug fixes.
  Consult Documentation: Refer to the official SAP documentation for the migration tool you are using. This may provide specific guidance on handling this error.
  Seek Support: If the issue persists, consider reaching out to SAP support or consulting with an SAP expert who can provide more tailored assistance based on your specific environment and configuration.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Migration Cockpit Documentation: Review the official SAP documentation for the Migration Cockpit, which may provide insights into common issues and their resolutions.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  By following these steps, you should be able to identify the root cause of the error and implement a suitable solution.