How To Fix CUX1079 - Instance &1 occurs twice in part-of table

SAP Error Message - Details

• Message type: E = Error

• Message class: CUX1 -

• Message number: 079

• Message text: Instance &1 occurs twice in part-of table

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CUX1079 - Instance &1 occurs twice in part-of table ?

  The SAP error message CUX1079, which states "Instance &1 occurs twice in part-of table," typically arises in the context of handling hierarchical data structures, particularly when dealing with the classification of materials or objects in SAP.
  Cause:
  This error occurs when there is a duplicate entry for an instance in a part-of relationship table. In SAP, part-of relationships are used to define how different objects or materials are related to one another. If the same instance (e.g., a material or object) is referenced more than once in a way that violates the expected uniqueness of that relationship, the system will throw this error.
  Solution:
  To resolve the CUX1079 error, you can follow these steps:
  
  
  Identify Duplicates: Check the part-of table for the instance mentioned in the error message. You can use transaction codes like SE16 or SE11 to view the relevant database table (e.g., CUX_PART_OF or similar) and identify where the duplicate entries are.
  
  
  Remove Duplicates: Once you have identified the duplicate entries, you will need to determine which entry is valid and remove or correct the duplicates. This may involve:
  
  Deleting the duplicate entry if it is not needed.
  Correcting the data to ensure that only one valid instance exists.
  
  
  
  Data Consistency Check: After making changes, perform a consistency check to ensure that the data integrity is maintained. You can use transaction codes like CUNI for consistency checks in classification.
  
  
  Reprocess the Transaction: After resolving the duplicates, try to reprocess the transaction that triggered the error to see if the issue is resolved.
  
  
  Consult Documentation: If you are unsure about the implications of deleting or modifying entries, consult SAP documentation or your organization's data governance policies.
  
  
  Seek Help from SAP Support: If the issue persists or if you are unable to resolve it, consider reaching out to SAP support for further assistance.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SE16 (Data Browser), SE11 (Data Dictionary), and CUNI (Consistency Check).
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  Data Model Understanding: Understanding the data model and relationships in your specific SAP implementation can help prevent similar issues in the future.
  
  By following these steps, you should be able to resolve the CUX1079 error and ensure that your part-of relationships are correctly defined in the system.