How To Fix VCH_COMMON012 - Compilation has duplicate item with key &1 &2 &3

SAP Error Message - Details

• Message type: E = Error

• Message class: VCH_COMMON -

• Message number: 012

• Message text: Compilation has duplicate item with key &1 &2 &3

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message VCH_COMMON012 - Compilation has duplicate item with key &1 &2 &3 ?

  The SAP error message VCH_COMMON012 indicates that there is a compilation issue due to duplicate items with a specific key in the context of a data structure or a table. This error typically arises when the system encounters multiple entries that share the same key values, which should be unique.
  Cause:
  The error is usually caused by one of the following:
  
  Duplicate Entries: There are multiple entries in a table or data structure that have the same key values (e.g., the same combination of fields that should be unique).
  Data Integrity Issues: The data being processed may not adhere to the expected integrity constraints, leading to duplicates.
  Incorrect Configuration: The configuration of the data model or the way data is being compiled may not be set up correctly, leading to duplicates being generated.
  
  Solution:
  To resolve the error, you can take the following steps:
  
  
  Identify Duplicates:
  
  Check the data source or the table that is causing the issue. Use SQL queries or SAP transaction codes (like SE16 or SE11) to identify the duplicate entries based on the key fields mentioned in the error message (represented by &1, &2, &3).
  
  
  
  Remove or Correct Duplicates:
  
  Once you have identified the duplicates, you can either delete the unnecessary entries or correct them to ensure that each key combination is unique.
  
  
  
  Review Data Loading Processes:
  
  If the duplicates are being introduced during data loading or processing, review the ETL (Extract, Transform, Load) processes to ensure that they are correctly handling unique constraints.
  
  
  
  Check Configuration:
  
  Review the configuration settings related to the data model or the specific application area to ensure that they are set up to prevent duplicates.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or support notes related to the specific module or functionality you are working with for any additional guidance or known issues.
  
  
  
  Testing:
  
  After making corrections, test the process again to ensure that the error does not reoccur.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  Transaction Codes: Familiarize yourself with relevant transaction codes (like SE11 for Data Dictionary, SE16 for table display) to help in troubleshooting.
  Data Model: Understand the data model and relationships between tables to better manage and prevent duplicates.
  
  If the issue persists after following these steps, consider reaching out to SAP support for further assistance.