How To Fix CNV_10020351 - &1 &2: System cardinality was not yet determined

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_10020 - Message class for package 10020

• Message number: 351

• Message text: &1 &2: System cardinality was not yet determined

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_10020351 - &1 &2: System cardinality was not yet determined ?

  The SAP error message CNV_10020351 with the description "System cardinality was not yet determined" typically occurs during data migration or system conversion processes, particularly when using SAP's tools for data migration, such as the SAP S/4HANA Migration Cockpit or the SAP Landscape Transformation (SLT) Replication Server.
  Cause:
  This error generally indicates that the system is unable to determine the cardinality of the data model or the relationships between different entities in the system. Cardinality refers to the uniqueness of data values contained in a particular attribute (or column) of a database table. The error can arise due to:
  
  Incomplete Configuration: The system may not have been fully configured to understand the relationships between different data entities.
  Missing Data: There may be missing or incomplete data in the source system that prevents the determination of cardinality.
  Incorrect Mapping: The mapping of source and target fields may not be correctly defined, leading to ambiguity in data relationships.
  Technical Issues: There could be underlying technical issues with the data model or the migration tool itself.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Configuration: Ensure that all necessary configurations for the migration process have been completed. This includes verifying that all required settings in the migration cockpit or transformation tools are correctly set up.
  
  
  Review Data Model: Examine the data model to ensure that all relationships and cardinalities are correctly defined. This may involve checking the source and target data structures.
  
  
  Validate Data: Perform data validation checks to ensure that the data in the source system is complete and adheres to the expected formats. Look for any missing or null values that could affect cardinality determination.
  
  
  Mapping Verification: Review the mapping of fields between the source and target systems. Ensure that all fields are correctly mapped and that there are no discrepancies.
  
  
  Consult Documentation: Refer to the SAP documentation related to the specific migration tool you are using. There may be specific guidelines or troubleshooting steps provided for this error.
  
  
  Logs and Traces: Check the logs and traces generated during the migration process for any additional error messages or warnings that could provide more context about the issue.
  
  
  SAP Support: If the issue persists after trying the above steps, consider reaching out to SAP Support for further assistance. They may have additional insights or patches available for known issues related to this error.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide guidance on similar issues.
  Migration Tools Documentation: Review the official documentation for the migration tools you are using, as they often contain troubleshooting sections for common errors.
  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.