CNV_20600_CHECK017 - Double mapping entry provided for source value &1

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_20600_CHECK - Messages for Check classes

• Message number: 017

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

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_20600_CHECK017 - Double mapping entry provided for source value &1 ?

  The SAP error message CNV_20600_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 execution of a data migration project, especially when using SAP's Conversion Tools or the SAP S/4HANA Migration Cockpit.
  Cause:
  The error arises when the same source value is mapped to multiple target values in the mapping configuration. This can happen due to:
  
  Duplicate Entries: The mapping table or configuration may have duplicate entries for the same source value.
  Incorrect Mapping Logic: The logic used to define the mapping may inadvertently lead to multiple target values being assigned to a single source value.
  Data Quality Issues: The source data may contain inconsistencies or duplicates that lead to this situation.
  
  Solution:
  To resolve the error, you can follow these 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 tools like Excel or SQL queries to identify duplicates based on the source value.
  
  
  
  Correct Mapping Logic:
  
  If the mapping logic is complex, review it to ensure that it correctly handles the source values without creating duplicates.
  
  
  
  Data Cleansing:
  
  If the source data has duplicates or inconsistencies, consider cleansing the data before performing the migration. This may involve deduplication or standardization of values.
  
  
  
  Testing:
  
  After making corrections, re-run the migration process to ensure that the error is resolved.
  
  
  
  Related Information:
  
  Transaction Codes: Depending on the context, you may need to use specific transaction codes related to data migration or conversion, such as LTMC for Migration Cockpit or LTMOM for Migration Object Modeler.
  Documentation: Refer to SAP documentation on data migration and the specific tools you are using for more detailed guidance on mapping configurations.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  
  By following these steps, you should be able to resolve the CNV_20600_CHECK017 error and successfully complete your data migration process.