How To Fix /ISDFPS/MM471 - NSN & already exists

SAP Error Message - Details

• Message type: E = Error

• Message class: /ISDFPS/MM -

• Message number: 471

• Message text: NSN & already exists

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.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /ISDFPS/MM471 - NSN & already exists ?

  The SAP error message /ISDFPS/MM471 NSN & already exists typically occurs in the context of materials management and inventory management within the SAP system. This error indicates that you are trying to create or update a National Stock Number (NSN) that already exists in the system. Here’s a breakdown of the cause, potential solutions, and related information:
  Cause:
  
  Duplicate Entry: The NSN you are trying to enter is already present in the database. This can happen if the NSN was previously created or imported.
  Data Migration Issues: If data was migrated from another system, there may be duplicates that were not properly handled.
  User Error: The user may have mistakenly attempted to create an NSN that they believed was new but is already in use.
  
  Solutions:
  
  
  Check Existing NSNs: Before creating a new NSN, check the existing records in the system to confirm whether the NSN is already present. You can do this by using transaction codes like MM03 (Display Material) or MM02 (Change Material) to search for the NSN.
  
  
  Use Existing NSN: If the NSN already exists, consider using the existing record instead of creating a new one. You may need to update or modify the existing record if necessary.
  
  
  Data Cleanup: If you find that there are duplicates due to data migration or other issues, you may need to clean up the data. This could involve deleting or merging duplicate records, but be cautious and ensure that you have backups and proper authorization before making changes.
  
  
  Consult Documentation: Review the relevant SAP documentation or help files for more information on handling NSNs and material records.
  
  
  Contact Support: If you are unable to resolve the issue, consider reaching out to your SAP support team or consulting with an SAP expert who can provide guidance based on your specific system configuration.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as MM01 (Create Material), MM02 (Change Material), and MM03 (Display Material) for managing materials in SAP.
  Material Master Data: Understanding how material master data is structured in SAP can help prevent issues related to duplicate entries.
  User Roles and Authorizations: Ensure that users have the appropriate roles and authorizations to create or modify NSNs to avoid unauthorized changes.
  
  By following these steps, you should be able to address the error message and manage NSNs effectively within your SAP system.