How To Fix CNV20201428 - Number of records inserted in &1 (incl. duplicates): &2

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV20201 -

• Message number: 428

• Message text: Number of records inserted in &1 (incl. duplicates): &2

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV20201428 - Number of records inserted in &1 (incl. duplicates): &2 ?

  The SAP error message CNV20201428 typically occurs during data migration or data transfer processes, particularly when using the SAP S/4HANA Migration Cockpit or similar tools. This error message indicates that there is an issue with the number of records being inserted into a target table, including duplicates.
  Cause:
  
  Duplicate Records: The error often arises when the data being migrated contains duplicate records that violate the unique constraints of the target table.
  Data Quality Issues: Poor data quality in the source system can lead to duplicates or invalid entries that cannot be inserted into the target system.
  Mapping Issues: Incorrect mapping of fields between the source and target systems can lead to unexpected duplicates.
  Configuration Issues: The configuration of the migration tool or the target system may not be set up to handle the incoming data correctly.
  
  Solution:
  
  Identify Duplicates: Before migration, analyze the source data to identify and resolve any duplicate records. This can be done using SQL queries or data profiling tools.
  Data Cleansing: Cleanse the data to remove duplicates or consolidate records as necessary. This may involve deduplication processes or merging records.
  Adjust Mapping: Review the mapping of fields between the source and target systems to ensure that they are correctly aligned and that no duplicates are being created due to incorrect mappings.
  Check Constraints: Review the constraints on the target table to understand what is causing the insert to fail. Ensure that the data being inserted complies with these constraints.
  Use Migration Tools: Utilize SAP's data migration tools effectively, such as the SAP S/4HANA Migration Cockpit, which may have built-in features to handle duplicates or provide better error reporting.
  Log Analysis: Check the migration logs for more detailed error messages that can provide insights into the specific records causing the issue.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide guidance on data migration best practices.
  Documentation: Review the official SAP documentation for the migration tool you are using, as it may contain specific instructions or troubleshooting steps for handling duplicate records.
  Community Forums: Engage with SAP community forums or support channels where other users may have encountered and resolved similar issues.
  
  By following these steps, you should be able to address the CNV20201428 error and successfully complete your data migration process.