How To Fix CNV_21521012 - Multiple lines with old employee group &1

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_21521 - Employee Group Rename

• Message number: 012

• Message text: Multiple lines with old employee group &1

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_21521012 - Multiple lines with old employee group &1 ?

  The SAP error message CNV_21521012, which indicates "Multiple lines with old employee group &1," typically arises during data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or similar tools. This error suggests that there are multiple entries in the source data that share the same old employee group identifier, which can lead to conflicts or inconsistencies during the migration process.
  Cause:
  
  Duplicate Entries: The primary cause of this error is the presence of duplicate entries in the source data for the specified old employee group. This can happen if the data was not properly cleansed or if there are multiple records for the same employee group in the legacy system.
  Data Mapping Issues: There may be issues with how the old employee groups are mapped to the new structure in the target system.
  Inconsistent Data: The data may not be consistent across different records, leading to confusion during the migration.
  
  Solution:
  
  Data Cleansing: Review the source data for duplicates. Identify and resolve any duplicate entries for the old employee group. This may involve consolidating records or deciding which record to keep.
  Data Validation: Ensure that the data being migrated adheres to the expected format and structure. Validate that all necessary fields are populated correctly and that there are no inconsistencies.
  Mapping Review: Check the mapping configuration in the migration tool to ensure that the old employee groups are correctly mapped to the new employee groups in the target system.
  Testing: After making the necessary adjustments, perform a test migration with a smaller dataset to ensure that the issue has been resolved before attempting a full migration.
  Consult Documentation: Refer to SAP documentation or notes related to the specific migration process you are using, as there may be additional guidelines or best practices to follow.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Migration Cockpit: Familiarize yourself with the SAP S/4HANA Migration Cockpit and its functionalities, as it provides tools for data mapping and validation.
  Data Migration Best Practices: Review best practices for data migration in SAP environments, which can help prevent similar issues in the future.
  
  If the problem persists after following these steps, consider reaching out to SAP support or consulting with an SAP expert who can provide more tailored assistance based on your specific situation.