How To Fix CNV_LTHCM_C_10040 - Duplicate entries in CNVCMIS_NTR_STRU when comparing logical keys

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_LTHCM_C_10 - LT HCM: Messages for Data Conversion

• Message number: 040

• Message text: Duplicate entries in CNVCMIS_NTR_STRU when comparing logical keys

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_LTHCM_C_10040 - Duplicate entries in CNVCMIS_NTR_STRU when comparing logical keys ?

  The SAP error message CNV_LTHCM_C_10040 indicates that there are duplicate entries in the table CNVCMIS_NTR_STRU when comparing logical keys during a data migration or conversion process, particularly in the context of the SAP Landscape Transformation (SLT) or similar data migration tools.
  Cause:
  The error typically arises due to:
  
  Duplicate Data: The source data being migrated contains duplicate entries for the logical keys defined in the mapping or transformation rules.
  Incorrect Mapping: The mapping configuration may not be set up correctly, leading to multiple records being interpreted as having the same logical key.
  Data Quality Issues: The source data may have inconsistencies or errors that result in duplicates.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Identify Duplicates:
  
  Query the CNVCMIS_NTR_STRU table to identify the duplicate entries. You can use SQL queries to find duplicates based on the logical key fields.
  Example SQL query:
  SELECT logical_key_field, COUNT(*)
  FROM CNVCMIS_NTR_STRU
  GROUP BY logical_key_field
  HAVING COUNT(*) > 1;
  
  
  
  
  Data Cleansing:
  
  Once duplicates are identified, you need to clean the source data. This may involve:
  
  Removing duplicates.
  Merging records if they contain complementary information.
  Correcting any data quality issues.
  
  
  
  
  
  Review Mapping Configuration:
  
  Check the mapping configuration in your data migration tool to ensure that it correctly defines the logical keys and that there are no overlaps or misconfigurations.
  
  
  
  Re-run the Migration:
  
  After addressing the duplicates and ensuring the mapping is correct, re-run the migration process to see if the error persists.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or notes related to the specific migration tool you are using for any additional guidance or best practices.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional troubleshooting steps.
  Data Migration Best Practices: Familiarize yourself with best practices for data migration, including data profiling, cleansing, and validation techniques.
  SAP Community: Engage with the SAP Community forums for insights from other users who may have encountered similar issues.
  
  By following these steps, you should be able to resolve the CNV_LTHCM_C_10040 error and successfully complete your data migration process.