How To Fix /ISDFPS/MM476 - Cannot delete; NSN & used in materials

SAP Error Message - Details

• Message type: E = Error

• Message class: /ISDFPS/MM -

• Message number: 476

• Message text: Cannot delete; NSN & used in materials

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 /ISDFPS/MM476 - Cannot delete; NSN & used in materials ?

  The SAP error message /ISDFPS/MM476 Cannot delete; NSN & used in materials typically occurs when you attempt to delete a Non-Stock Number (NSN) that is still being referenced in materials or other related objects within the SAP system. This is a common issue in inventory and materials management, particularly when dealing with NSNs, which are unique identifiers for items in the supply chain.
  Cause:
  
  Active References: The NSN you are trying to delete is still linked to one or more materials, which prevents its deletion.
  Material Master Data: The NSN may be part of the material master data, and SAP enforces referential integrity to ensure that no active references are lost.
  Transactions: There may be ongoing transactions or processes that involve the NSN, such as purchase orders, stock movements, or inventory records.
  
  Solution:
  To resolve this error, you can follow these steps:
  
  
  Identify References:
  
  Use transaction codes like MM03 (Display Material) to check if the NSN is still being used in any material records.
  You can also use transaction SE16N to query the relevant tables (e.g., MARA, MARC, MAST) to find any materials that reference the NSN.
  
  
  
  Remove References:
  
  If you find that the NSN is linked to materials, you will need to either delete or modify those materials to remove the reference to the NSN.
  Ensure that there are no open purchase orders, stock movements, or other transactions that involve the NSN.
  
  
  
  Check for Dependent Objects:
  
  Look for any dependent objects such as BOMs (Bill of Materials) or routing that may also reference the NSN.
  
  
  
  Delete or Change the NSN:
  
  Once all references are cleared, you should be able to delete the NSN without encountering the error.
  
  
  
  Consult Documentation:
  
  If you are unsure about the implications of deleting the NSN or the materials, consult your organization's SAP documentation or reach out to your SAP support team for guidance.
  
  
  
  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.
  SAP Notes: Check SAP Notes for any specific patches or updates related to this error message.
  User Permissions: Ensure that you have the necessary permissions to delete materials and NSNs in the SAP system.
  
  By following these steps, you should be able to resolve the error and successfully delete the NSN if it is no longer needed.