How To Fix CNV_NCE_BAS464 - Valid mapping values saved for &1

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_NCE_BAS - Number conversion engine: messages

• Message number: 464

• Message text: Valid mapping values saved for &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_NCE_BAS464 - Valid mapping values saved for &1 ?

  The SAP error message CNV_NCE_BAS464 typically indicates that there are valid mapping values saved for a specific object or field in the context of a data conversion or migration process. This message is often encountered during the execution of the SAP Data Migration or Conversion tools, particularly in the context of the SAP S/4HANA migration.
  Cause:
  The error message suggests that the system has detected that there are existing valid mapping values for the specified object (denoted by &1). This could occur due to several reasons:
  
  Duplicate Entries: There may be duplicate mapping entries for the same object, which can lead to confusion in the data conversion process.
  Incomplete Mapping: The mapping process may not have been completed correctly, leading to inconsistencies in the mapping values.
  Configuration Issues: There may be issues with the configuration of the data migration tool or the mapping settings.
  
  Solution:
  To resolve the CNV_NCE_BAS464 error, you can take the following steps:
  
  
  Check Mapping Entries:
  
  Go to the relevant transaction or tool where the mapping is defined (e.g., the SAP Migration Cockpit or the specific data migration tool you are using).
  Review the mapping entries for the object indicated by &1 to identify any duplicates or inconsistencies.
  
  
  
  Remove Duplicates:
  
  If you find duplicate mapping values, remove or consolidate them to ensure that each object has a unique mapping entry.
  
  
  
  Complete Mapping:
  
  Ensure that all required mapping values are correctly defined and that the mapping process is complete. If any values are missing, add them as necessary.
  
  
  
  Consult Documentation:
  
  Refer to the SAP documentation or notes related to the specific migration tool you are using. There may be specific guidelines or troubleshooting steps provided by SAP.
  
  
  
  Check for Updates:
  
  Ensure that your SAP system is up to date with the latest support packages and notes, as there may be fixes or improvements related to the data migration tools.
  
  
  
  Contact SAP Support:
  
  If the issue persists after checking the mapping entries and configurations, consider reaching out to SAP Support for further assistance. Provide them with the error message and any relevant details about your migration process.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional context.
  Migration Cockpit: Familiarize yourself with the SAP Migration Cockpit and its functionalities, as it is a common tool used for data migration in SAP S/4HANA.
  Data Mapping: Understanding the principles of data mapping and transformation can help in troubleshooting similar issues in the future.
  
  By following these steps, you should be able to identify and resolve the cause of the CNV_NCE_BAS464 error message in your SAP environment.