How To Fix CNV_00001621 - Selected tables removed from backup

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_00001 - Message class for CWB settings maintenance programs

• Message number: 621

• Message text: Selected tables removed from backup

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_00001621 - Selected tables removed from backup ?

  The SAP error message CNV_00001621 indicates that certain tables have been removed from the backup during a data migration or conversion process. This message is part of the SAP Conversion and Migration tools, often used in scenarios like system upgrades, data migrations, or when using the SAP S/4HANA Migration Cockpit.
  Cause:
  The error typically arises due to one or more of the following reasons:
  
  Configuration Issues: The configuration settings for the migration or conversion process may not be set correctly, leading to the exclusion of certain tables from the backup.
  Data Integrity Checks: The system may have identified that certain tables do not meet the required criteria for backup, possibly due to data integrity issues or inconsistencies.
  Manual Exclusions: Tables may have been manually excluded from the backup process by a user or administrator.
  Technical Limitations: There may be technical limitations or restrictions in the migration tool that prevent certain tables from being backed up.
  
  Solution:
  To resolve this error, consider the following steps:
  
  Review Configuration Settings: Check the configuration settings of the migration or conversion process to ensure that all necessary tables are included in the backup.
  Check Data Integrity: Perform data integrity checks on the tables that are being excluded. Ensure that there are no inconsistencies or issues that would prevent them from being backed up.
  Consult Documentation: Refer to the SAP documentation related to the specific migration or conversion tool you are using. There may be specific guidelines or prerequisites that need to be followed.
  Adjust Backup Parameters: If certain tables are being excluded due to manual settings, adjust the parameters to include them in the backup.
  Log Analysis: Review the logs generated during the migration process for any additional error messages or warnings that could provide more context on why the tables were removed.
  SAP Support: If the issue persists, consider reaching out to SAP Support for assistance. They can provide insights based on the specific context of your system and the migration process.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error message or provide additional troubleshooting steps.
  Migration Cockpit Documentation: Review the official SAP documentation for the Migration Cockpit or the specific tool you are using, as it may contain valuable information regarding table handling during migrations.
  Community Forums: Engage with the SAP Community or forums where other users may have encountered similar issues and can share their solutions.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to ensure that the necessary tables are included in the backup process.