How To Fix CNV_10020343 - Suggested and maintained maximum cardinality differ

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_10020 - Message class for package 10020

• Message number: 343

• Message text: Suggested and maintained maximum cardinality differ

What causes this issue?

A maximum cardinality of &V3& has been suggested for &V1& &V2&. However
a maximum cardinality of &V4& has been maintained.

How to fix this error?

Check if the maximum cardinality has been maintained correctly.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_10020343 - Suggested and maintained maximum cardinality differ ?

  The SAP error message CNV_10020343 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 a mismatch between the suggested maximum cardinality and the maintained maximum cardinality for a specific data structure or entity.
  Cause:
  The error arises when the system detects that the maximum cardinality defined in the data model (the number of instances of a particular entity that can be associated with another entity) does not match the cardinality that is suggested or expected by the migration tool. This can happen due to:
  
  Data Model Changes: Changes in the underlying data model that have not been reflected in the migration settings.
  Configuration Issues: Incorrect configuration settings in the migration cockpit or data mapping.
  Data Quality Issues: The data being migrated may not conform to the expected structure or relationships defined in the target system.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Review Data Model: Check the data model definitions in both the source and target systems to ensure that the cardinality settings are consistent. This may involve reviewing the data dictionary or entity relationship diagrams.
  
  
  Adjust Migration Settings: If the suggested cardinality is incorrect, you may need to adjust the migration settings or mappings in the migration cockpit to align with the actual data model.
  
  
  Data Cleansing: Ensure that the data being migrated adheres to the expected cardinality rules. This may involve cleaning up the data in the source system to remove any inconsistencies.
  
  
  Consult Documentation: Refer to the SAP documentation for the specific migration tool you are using. There may be specific guidelines or notes related to cardinality issues.
  
  
  Check for Notes and Updates: Look for any SAP Notes or updates related to the migration tool or the specific error message. SAP frequently releases updates that may address known issues.
  
  
  Testing: After making adjustments, perform a test migration to verify that the error has been resolved.
  
  
  Related Information:
  
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may provide additional insights or solutions for this specific error.
  SAP Community: Engage with the SAP Community forums where other users may have encountered similar issues and can share their solutions.
  Migration Cockpit Documentation: Review the official SAP documentation for the Migration Cockpit, which may provide specific instructions on handling cardinality issues.
  
  By following these steps, you should be able to identify the root cause of the error and implement a solution to successfully complete your data migration.