How To Fix FSH_MAIN305 - Duplicate entry for the key combination &1/&2/&3/&4 exists

SAP Error Message - Details

• Message type: E = Error

• Message class: FSH_MAIN - Message Class for Article Master Data

• Message number: 305

• Message text: Duplicate entry for the key combination &1/&2/&3/&4 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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message FSH_MAIN305 - Duplicate entry for the key combination &1/&2/&3/&4 exists ?

  The SAP error message FSH_MAIN305 indicates that there is a duplicate entry for a specific key combination in the system. This typically occurs in the context of managing master data, such as in the SAP Fashion Management (FSH) module, where unique combinations of attributes (like size, color, and style) are required for items.
  Cause:
  The error arises when you attempt to create or update a record that conflicts with an existing record in the database. The key combination specified in the error message (represented by placeholders &1, &2, &3, &4) refers to specific attributes that are supposed to be unique. If you try to enter a combination that already exists, the system will throw this error.
  Solution:
  To resolve the FSH_MAIN305 error, you can follow these steps:
  
  
  Identify the Duplicate Entry:
  
  Check the key combination mentioned in the error message. This will help you identify which specific attributes are causing the conflict.
  Use transaction codes like SE16 or SE11 to query the relevant database table (e.g., MARA, MARC, or any specific table related to your master data) to find the existing entry.
  
  
  
  Review Existing Data:
  
  Once you identify the existing entry, review its details to understand why the duplicate is being created. It may be due to incorrect data entry or a misunderstanding of the unique constraints.
  
  
  
  Modify or Delete the Duplicate:
  
  If the existing entry is valid and should remain, you will need to modify your new entry to ensure it does not conflict with the existing one.
  If the existing entry is no longer needed, you may consider deleting it, but ensure that this action does not affect other processes or data integrity.
  
  
  
  Data Validation:
  
  Implement data validation checks in your data entry process to prevent duplicates from being created in the future. This can include using validation rules or checks before saving new entries.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or consult with your SAP support team for any specific guidelines related to the FSH module and handling master data.
  
  
  
  Related Information:
  
  Key Combinations: Understand the significance of the key combinations in your specific business context. This may involve attributes like product category, size, color, etc.
  SAP Notes: Check for any relevant SAP Notes that might address known issues or provide additional guidance on handling this error.
  User Permissions: Ensure that you have the necessary permissions to view and modify the data in question, as restrictions can sometimes lead to confusion regarding data entries.
  
  By following these steps, you should be able to resolve the FSH_MAIN305 error and prevent it from occurring in the future.