How To Fix CNV_10020342 - Suggestion for maximum cardinality: &1

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_10020 - Message class for package 10020

• Message number: 342

• Message text: Suggestion for maximum cardinality: &1

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_10020342 - Suggestion for maximum cardinality: &1 ?

  The SAP error message CNV_10020342, which suggests a maximum cardinality issue, typically arises during data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or similar tools. This error indicates that the system has detected a potential problem with the cardinality of relationships between entities in your data model.
  Cause:
  The error message CNV_10020342 suggests that there is a mismatch or inconsistency in the expected maximum cardinality of a relationship between two entities. Cardinality refers to the number of instances of one entity that can or must be associated with instances of another entity. For example, a one-to-many relationship means that one instance of an entity can be associated with multiple instances of another entity.
  Common causes for this error include:
  
  Incorrectly defined relationships in the data model.
  Data that does not conform to the expected cardinality rules (e.g., a record that is supposed to have a one-to-many relationship but has multiple entries).
  Configuration issues in the migration settings or mapping.
  
  Solution:
  To resolve the CNV_10020342 error, you can take the following steps:
  
  
  Review Data Model: Check the data model and ensure that the relationships between entities are correctly defined. Verify that the maximum cardinality settings align with the business requirements.
  
  
  Data Validation: Validate the data being migrated to ensure it adheres to the expected cardinality. Look for any records that may violate the defined relationships.
  
  
  Adjust Mapping: If you are using a migration tool, review the mapping settings. Ensure that the mappings between source and target entities are correctly configured to reflect the intended cardinality.
  
  
  Consult Documentation: Refer to SAP documentation or notes related to the specific migration tool you are using. There may be specific guidelines or best practices for handling cardinality issues.
  
  
  Testing: After making adjustments, perform a test migration with a smaller dataset to ensure that the changes resolve the issue without introducing new errors.
  
  
  Seek Support: If the issue persists, consider reaching out to SAP support or consulting with an SAP expert who can provide more tailored assistance based on your specific scenario.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional context.
  Migration Cockpit Documentation: Review the official SAP documentation for the Migration Cockpit or the specific tool you are using for data migration.
  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 root cause of the CNV_10020342 error and implement a suitable solution.