How To Fix CNV_10100244 - Based on subclass mapping, no duplicate record expected for set class &1

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_10100 - Messages from package 10100

• Message number: 244

• Message text: Based on subclass mapping, no duplicate record expected for set class &1

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_10100244 - Based on subclass mapping, no duplicate record expected for set class &1 ?

  The SAP error message CNV_10100244 indicates that during a data migration or conversion process, the system has encountered a situation where it expected to find a unique record for a specific set class, but instead found a duplicate. This error typically arises in the context of data migration projects, especially when using SAP's Conversion Tools or Data Migration tools.
  Cause:
  The error is caused by the following scenarios:
  
  Duplicate Records: There are multiple entries in the source data for a specific set class that should be unique. This could be due to data quality issues in the source system.
  Incorrect Mapping: The subclass mapping configuration may not be set up correctly, leading the system to expect a unique record when there are actually duplicates.
  Data Integrity Issues: The data being migrated may not adhere to the expected integrity constraints, leading to conflicts during the migration process.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Identify Duplicates:
  
  Review the source data for the specific set class mentioned in the error message. Use SQL queries or data analysis tools to identify duplicate records.
  Check the relevant tables in the source system to find records that have the same key attributes.
  
  
  
  Data Cleansing:
  
  Once duplicates are identified, you will need to decide how to handle them. This could involve:
  
  Merging records if they contain complementary information.
  Deleting unnecessary duplicates.
  Correcting data entries to ensure uniqueness.
  
  
  
  
  
  Review Mapping Configuration:
  
  Check the subclass mapping configuration in the migration tool. Ensure that it is set up correctly and that it aligns with the expected data structure.
  Make adjustments to the mapping if necessary to ensure that it can handle the data correctly.
  
  
  
  Test Migration:
  
  After making the necessary changes, perform a test migration to see if the error persists. Monitor the logs for any further issues.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or notes related to the specific migration tool you are using. There may be additional guidelines or best practices for handling such errors.
  
  
  
  Seek Support:
  
  If the issue persists after attempting the above solutions, consider reaching out to SAP support or consulting with a professional who specializes in SAP data migration.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may provide additional insights or solutions for this specific error.
  Data Migration Best Practices: Familiarize yourself with best practices for data migration in SAP, including data validation, cleansing, and mapping strategies.
  SAP Community: Engage with the SAP Community forums where other users may have encountered similar issues and can share their experiences and solutions.
  
  By following these steps, you should be able to address the CNV_10100244 error and successfully complete your data migration process.