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

CNV_10020021 - Overview

• 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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CNV_10020021 - Details

• 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