How To Fix CNV_CMIS_A_20212 - Identical key with different values found in table

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_CMIS_A_20 - Message class for Cross-Client Customizing Comparison (SLO)

• Message number: 212

• Message text: Identical key with different values found in table

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_CMIS_A_20212 - Identical key with different values found in table ?

  The SAP error message CNV_CMIS_A_20212 indicates that there is an issue with duplicate keys in a table where the keys have different values. This typically occurs during data migration or conversion processes, particularly when using the SAP Conversion Tools or during the execution of a data migration project.
  Cause:
  The error arises when the system detects that there are multiple entries in a table that share the same key but have different values for other fields. This can happen due to:
  
  Data Duplication: The source data may contain duplicate records that were not properly cleaned or deduplicated before migration.
  Inconsistent Data: Different systems or sources may have conflicting data for the same key, leading to inconsistencies.
  Incorrect Mapping: During the mapping of fields from the source to the target system, there may have been errors that resulted in the same key being assigned different values.
  
  Solution:
  To resolve this error, you can follow these steps:
  
  
  Identify the Duplicate Records:
  
  Use SQL queries or data analysis tools to identify the records in the source data that have the same key but different values.
  Example SQL query:
  SELECT key_field, COUNT(*)
  FROM your_table
  GROUP BY key_field
  HAVING COUNT(*) > 1;
  
  
  
  
  Analyze the Data:
  
  Review the conflicting records to understand why they are different. Determine which values are correct or if they need to be merged.
  
  
  
  Clean the Data:
  
  Depending on your analysis, you may need to:
  
  Remove duplicates.
  Merge records with different values into a single record with the correct value.
  Standardize the data to ensure consistency.
  
  
  
  
  
  Adjust the Mapping:
  
  If the issue is related to incorrect mapping, review the mapping configuration to ensure that it correctly reflects the source data structure.
  
  
  
  Re-run the Migration:
  
  After cleaning the data and ensuring that there are no duplicate keys with different values, re-run the migration process.
  
  
  
  Related Information:
  
  Data Migration Tools: Familiarize yourself with SAP's data migration tools, such as the SAP Data Services or SAP S/4HANA Migration Cockpit, which can help in managing data consistency.
  Documentation: Refer to SAP documentation for specific guidelines on data migration and handling errors.
  SAP Notes: Check for any relevant SAP Notes that may provide additional insights or solutions related to this error message.
  
  By following these steps, you should be able to resolve the CNV_CMIS_A_20212 error and ensure a successful data migration process.