How To Fix CNV_10020341 - Maximum cardinality for &3 &4 has not been maintained

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_10020 - Message class for package 10020

• Message number: 341

• Message text: Maximum cardinality for &3 &4 has not been maintained

What causes this issue?

Maximum cardinality is meant to be suggested for &V1& &V2&. An
intermediate step or alternative path contains &V3& &V4&, for which the
maximum cardinality is not maintained.

System Response

The maximum cardinality suggested only if the maximum cardinalities
have been maintained for all intermediate steps and alternative paths.

How to fix this error?

Maintain the maximum cardinalities for all intermediate steps and
alternative paths for &V1& &V2&.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_10020341 - Maximum cardinality for &3 &4 has not been maintained ?

  The SAP error message CNV_10020341, which states "Maximum cardinality for &3 &4 has not been maintained," 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 the maximum cardinality (the maximum number of instances of a relationship) for a specific entity or object has not been properly defined or maintained in the system.
  Cause:
  
  Data Model Configuration: The error often arises when the data model configuration does not align with the expected cardinality settings. This can happen if the maximum number of allowed relationships between entities is not set correctly.
  Migration Settings: During the migration process, if the source data does not conform to the expected structure or cardinality defined in the target system, this error can occur.
  Custom Development: If there are custom developments or modifications in the data model that do not adhere to the standard cardinality rules, it can lead to this error.
  
  Solution:
  
  
  Check Data Model Configuration: Review the data model configuration in the target system to ensure that the maximum cardinality settings for the relevant entities are correctly defined. This can typically be done in the SAP Data Dictionary (SE11) or through the relevant configuration transactions.
  
  
  Adjust Migration Settings: If you are using a migration tool, check the migration settings to ensure that they align with the cardinality requirements of the target system. You may need to adjust the mapping or transformation rules to ensure compliance.
  
  
  Data Validation: Validate the source data to ensure that it meets the cardinality requirements of the target system. This may involve cleaning or transforming the data before migration.
  
  
  Consult Documentation: Refer to the SAP documentation related to the specific migration tool you are using. There may be specific guidelines or best practices for handling cardinality issues.
  
  
  Engage SAP Support: If the issue persists after checking the above points, consider reaching out to SAP Support for assistance. They can provide insights based on the specific context of your implementation.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance on data migration and cardinality issues.
  Migration Cockpit Documentation: Review the official SAP documentation for the Migration Cockpit, which may provide insights into common issues and their resolutions.
  Community Forums: Engage with the SAP Community or forums where other users may have encountered similar issues and can share their solutions.
  
  By following these steps, you should be able to identify the cause of the error and implement a suitable solution.