How To Fix CNV_10020021 - Elementary relationship &1, source obj.: Table for field not maintained

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_10020 - Message class for package 10020

• Message number: 021

• Message text: Elementary relationship &1, source obj.: Table for field not maintained

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_10020021 - Elementary relationship &1, source obj.: Table for field not maintained ?

  The SAP error message CNV_10020021 typically occurs during data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or other data migration tools. This error indicates that there is an issue with the configuration of the elementary relationship for a specific field in the source object, meaning that the necessary mapping or relationship for that field has not been maintained.
  Cause:
  The error can arise due to several reasons:
  
  Missing Configuration: The elementary relationship for the specified field is not defined in the migration settings.
  Incorrect Mapping: The mapping between the source and target fields is not correctly set up, leading to a failure in recognizing the relationship.
  Data Model Changes: If there have been changes in the data model (e.g., during an upgrade or migration), the existing configurations may no longer be valid.
  Field Not Supported: The field in question may not be supported for migration, or it may require additional settings to be properly handled.
  
  Solution:
  To resolve the error, you can take the following steps:
  
  
  Check Configuration:
  
  Go to the migration project or the relevant configuration settings in the SAP system.
  Verify that the elementary relationship for the specified field is correctly maintained.
  
  
  
  Maintain Mapping:
  
  Ensure that the mapping between the source and target fields is correctly defined.
  If necessary, create or adjust the mapping to include the missing relationship.
  
  
  
  Review Data Model:
  
  Check if there have been any recent changes to the data model that could affect the migration.
  Update the migration settings to reflect any changes in the data structure.
  
  
  
  Consult Documentation:
  
  Refer to the SAP documentation or migration guides for specific instructions on how to handle the field in question.
  Look for any notes or updates from SAP regarding known issues or fixes related to this error.
  
  
  
  Testing:
  
  After making the necessary changes, run a test migration to ensure that the error has been resolved.
  Monitor the logs for any additional errors that may arise.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any specific notes related to the error message CNV_10020021. SAP frequently releases notes that address known issues and provide solutions.
  Migration Cockpit: Familiarize yourself with the SAP S/4HANA Migration Cockpit and its functionalities, as it provides tools and templates for data migration.
  Community Forums: Engage with the SAP Community or forums where other users may have encountered similar issues and can provide insights or solutions.
  
  By following these steps, you should be able to identify and resolve the cause of the error message CNV_10020021 effectively.