How To Fix CNV_10020284 - System cardinality was reset

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_10020 - Message class for package 10020

• Message number: 284

• Message text: System cardinality was reset

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_10020284 - System cardinality was reset ?

  The SAP error message CNV_10020284: System cardinality was reset typically occurs during data migration or system conversion processes, particularly when using SAP's Conversion and Migration tools. This error indicates that the cardinality settings for a particular data model or structure have been reset, which can lead to issues in data consistency or integrity.
  Cause:
  
  Data Model Changes: The error may arise if there have been changes to the data model that affect how data is related or structured.
  Configuration Issues: Incorrect configuration settings in the migration tools or the source/target systems can lead to this error.
  Inconsistent Data: If the data being migrated does not conform to the expected structure or relationships, it can trigger this error.
  Version Mismatch: Using incompatible versions of SAP tools or components can also lead to cardinality issues.
  
  Solution:
  
  Check Configuration: Review the configuration settings in the migration tool to ensure they are set correctly for the data model you are working with.
  Data Validation: Validate the data being migrated to ensure it adheres to the expected structure and relationships. Look for any inconsistencies or anomalies in the data.
  Review Migration Logs: Check the migration logs for any additional error messages or warnings that may provide more context about the issue.
  Reconfigure Cardinality: If applicable, manually reconfigure the cardinality settings in the data model to reflect the correct relationships.
  Consult Documentation: Refer to SAP documentation or notes related to the specific migration tool you are using for any known issues or additional troubleshooting steps.
  SAP Support: If the issue persists, consider reaching out to SAP Support for assistance, providing them with detailed information about the error and the context in which it occurred.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide guidance on similar issues.
  Migration Tools: Familiarize yourself with the specific migration tools being used (e.g., SAP S/4HANA Migration Cockpit, SAP Data Services) and their documentation.
  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 solution to resolve it.