How To Fix CNV_10020350 - Found system cardinality: &1

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_10020 - Message class for package 10020

• Message number: 350

• Message text: Found system cardinality: &1

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_10020350 - Found system cardinality: &1 ?

  The SAP error message CNV_10020350 Found system cardinality: &1 is typically related to data migration or system conversion processes, particularly in the context of SAP S/4HANA migrations or similar projects. This error indicates that there is an issue with the cardinality of the data model, which refers to the relationship between different entities in the database.
  Cause:
  
  Data Model Mismatch: The error often arises when the expected cardinality of relationships between tables or entities does not match the actual cardinality found in the source system. For example, if the migration process expects a one-to-many relationship but finds a many-to-many relationship instead.
  Configuration Issues: There may be configuration settings in the source or target system that are not aligned, leading to discrepancies in how data relationships are defined.
  Data Quality Issues: Inconsistent or corrupt data in the source system can also lead to unexpected cardinality.
  
  Solution:
  
  Analyze the Cardinality: Review the data model and relationships in both the source and target systems. Use transaction codes like SE11 (Data Dictionary) to check the definitions of the relevant tables and their relationships.
  Adjust Data Model: If the cardinality is incorrect, you may need to adjust the data model in the source system to align with the expected model in the target system. This could involve modifying relationships or cleaning up data.
  Data Cleansing: Perform data cleansing to ensure that the data adheres to the expected formats and relationships. This may involve removing duplicates or correcting data entries.
  Consult Documentation: Refer to SAP's migration documentation or guides specific to your version of SAP S/4HANA for any specific requirements or recommendations regarding cardinality.
  Use Migration Tools: If you are using SAP's migration tools (like the SAP S/4HANA Migration Cockpit), ensure that you are following the recommended steps and configurations as outlined in the tool's documentation.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance on handling cardinality issues.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  Testing: After making adjustments, conduct thorough testing to ensure that the data migration or conversion process works as expected without further cardinality issues.
  
  If the problem persists after trying the above solutions, it may be beneficial to reach out to SAP support for more tailored assistance.