How To Fix BUP002 - Internal key for segment &1 is not unique

SAP Error Message - Details

• Message type: E = Error

• Message class: BUP - Business Partner Messages

• Message number: 002

• Message text: Internal key for segment &1 is not unique

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 BUP002 - Internal key for segment &1 is not unique ?

  The SAP error message BUP002 indicates that there is a problem with the uniqueness of the internal key for a business partner segment. This typically occurs when you are trying to create or modify a business partner (BP) and the system detects that the internal key for a specific segment is not unique, which is a requirement for the business partner data model.
  Cause:
  
  Duplicate Entries: The most common cause of this error is that there are duplicate entries in the database for the business partner segment you are trying to create or modify. This can happen if the same business partner is being created multiple times or if there are inconsistencies in the data.
  Data Migration Issues: If data has been migrated from another system or if there have been bulk uploads, it is possible that duplicates were introduced during this process.
  Incorrect Configuration: There may be issues with the configuration of the business partner settings that lead to conflicts in the internal keys.
  
  Solution:
  
  
  Check for Duplicates: 
  
  Use transaction code BP to search for existing business partners. Look for any duplicates in the segments you are trying to create or modify.
  You can also use transaction SE16 or SE16N to query the relevant tables (like BUT000, BUT020, etc.) to find any duplicate entries.
  
  
  
  Delete or Correct Duplicates: 
  
  If you find duplicates, you may need to delete or correct them. Ensure that you have the necessary authorizations to perform these actions.
  If the duplicates are not needed, you can delete them. If they are needed, you may need to merge them or adjust the data to ensure uniqueness.
  
  
  
  Review Data Migration Processes: 
  
  If the issue arose after a data migration, review the migration process to ensure that it correctly handled unique keys and did not introduce duplicates.
  
  
  
  Check Configuration: 
  
  Review the configuration settings for business partners in the SAP system to ensure that they are set up correctly and that there are no conflicting settings.
  
  
  
  Consult SAP Notes: 
  
  Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide additional guidance.
  
  
  
  Related Information:
  
  Business Partner Concept: Understand the business partner concept in SAP, which includes various segments like general data, company code data, and purchasing data.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as BP (Business Partner), SE16 (Data Browser), and SE11 (Data Dictionary) for troubleshooting.
  SAP Documentation: Refer to SAP Help documentation for detailed information on business partner management and error handling.
  
  By following these steps, you should be able to resolve the BUP002 error and ensure that your business partner data is correctly maintained in the SAP system.