How To Fix CNV40107021 - Check for Temporary duplicates

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV40107 - Package 40107 - Logical System

• Message number: 021

• Message text: Check for Temporary duplicates

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV40107021 - Check for Temporary duplicates ?

  The SAP error message CNV40107021, which states "Check for Temporary duplicates," typically occurs during data migration or data transfer processes, particularly when using the SAP S/4HANA Migration Cockpit or other data migration tools. This error indicates that the system has detected potential duplicate entries in the data being processed, which could lead to inconsistencies or integrity issues in the target system.
  Cause:
  
  Duplicate Data: The most common cause of this error is the presence of duplicate records in the source data that are being migrated. This can happen if the same data is extracted multiple times or if there are inherent duplicates in the source system.
  Temporary Duplicates: The term "temporary duplicates" refers to records that may not be duplicates in the source system but are treated as such during the migration process due to the way data is being processed or transformed.
  Data Mapping Issues: Incorrect mapping or transformation rules can lead to the creation of duplicate records in the target system.
  
  Solution:
  
  Identify Duplicates: Review the source data to identify any duplicate records. This can be done using data profiling tools or SQL queries to check for unique constraints.
  Data Cleansing: Cleanse the data to remove duplicates before migration. This may involve consolidating records, removing unnecessary duplicates, or ensuring that unique identifiers are correctly assigned.
  Adjust Migration Settings: If the duplicates are expected and valid, consider adjusting the migration settings to handle them appropriately. This may involve configuring the migration tool to allow for certain duplicates or to merge records.
  Review Mapping Rules: Ensure that the mapping and transformation rules are correctly defined to prevent the creation of duplicates during the migration process.
  Testing: Conduct thorough testing of the migration process with a subset of data to ensure that duplicates are handled correctly before performing a full migration.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes or Knowledge Base Articles (KBAs) that may provide additional insights or specific fixes related to this error.
  Migration Cockpit Documentation: Review the official SAP documentation for the Migration Cockpit, which may provide guidelines on handling duplicates and best practices for data migration.
  Data Quality Tools: Consider using data quality tools that can help in identifying and resolving duplicates in the source data before migration.
  
  By addressing the root cause of the duplicates and ensuring that the data is clean and well-structured, you can resolve the CNV40107021 error and proceed with the migration successfully.