How To Fix CNV_20211_CHECK017 - Double mapping entry provided for source value &1

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_20211_CHECK - Messages for check functions (company conversion)

• Message number: 017

• Message text: Double mapping entry provided for source value &1

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_20211_CHECK017 - Double mapping entry provided for source value &1 ?

  The SAP error message CNV_20211_CHECK017 indicates that there is a double mapping entry for a source value in a data conversion or migration process. This typically occurs during the use of SAP's data migration tools, such as the SAP S/4HANA Migration Cockpit or other conversion tools, where source values are mapped to target values.
  Cause:
  The error arises when the same source value is mapped to multiple target values. This can happen due to:
  
  Duplicate Entries: There are duplicate entries in the mapping table or configuration where the same source value is associated with different target values.
  Incorrect Mapping Configuration: The mapping rules or configurations may have been set up incorrectly, leading to conflicting mappings.
  Data Quality Issues: The source data may contain inconsistencies or duplicates that were not addressed prior to the mapping process.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Review Mapping Configuration:
  
  Check the mapping configuration for the specific source value mentioned in the error message (&1).
  Ensure that each source value is mapped to only one target value.
  
  
  
  Identify Duplicates:
  
  Look for duplicate entries in the mapping table or configuration. You can use SQL queries or data analysis tools to identify duplicates.
  Remove or consolidate duplicate mappings to ensure that each source value has a unique target mapping.
  
  
  
  Data Cleansing:
  
  If the source data contains duplicates or inconsistencies, perform data cleansing to ensure that the data is accurate and consistent before mapping.
  This may involve deduplication, standardization, or validation of the source data.
  
  
  
  Testing:
  
  After making the necessary changes, re-run the mapping process to check if the error persists.
  Conduct thorough testing to ensure that the mappings are functioning as expected.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or guides related to the specific migration tool you are using for additional insights and best practices.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may provide additional context or solutions for this specific error.
  Migration Cockpit: If you are using the SAP S/4HANA Migration Cockpit, review the migration guide for best practices on mapping and data preparation.
  Community Forums: Engage with SAP community forums or support channels for insights from other users who may have encountered similar issues.
  
  By following these steps, you should be able to resolve the CNV_20211_CHECK017 error and ensure a smooth data migration process.