How To Fix RS_DB_DB6620 - There is a non-unique index &2 on table &1

SAP Error Message - Details

• Message type: E = Error

• Message class: RS_DB_DB6 - DB6-Specific Messages in SAP BW

• Message number: 620

• Message text: There is a non-unique index &2 on table &1

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RS_DB_DB6620 - There is a non-unique index &2 on table &1 ?

  The SAP error message RS_DB_DB6620 indicates that there is a non-unique index on a database table, which is causing issues with data integrity or performance. This error typically arises when the system expects a unique index for a certain operation, but finds that the index defined on the table allows duplicate entries.
  Cause:
  
  Non-Unique Index: The index defined on the specified table allows for duplicate values, which can lead to ambiguity when the system tries to enforce uniqueness.
  Data Integrity Issues: The presence of duplicate entries in a column that is expected to be unique can lead to data integrity issues.
  Database Constraints: The error may occur when trying to perform operations that require unique constraints, such as certain types of joins or updates.
  
  Solution:
  
  Identify the Index: Use transaction codes like SE11 (Data Dictionary) or SE14 (Database Utility) to check the structure of the table and identify the non-unique index.
  Review Data: Check the data in the table to identify any duplicate entries that violate the expected uniqueness.
  Modify the Index:
  
  If the index should be unique, you can drop the existing non-unique index and create a new unique index.
  If the index should remain non-unique, you may need to adjust your application logic to handle duplicates appropriately.
  
  
  Data Cleanup: If duplicates exist and they are not valid, you may need to clean up the data to ensure that it adheres to the expected constraints.
  Consult Documentation: Review SAP documentation or consult with your SAP Basis or development team for specific guidance related to your system's configuration.
  
  Related Information:
  
  Transaction Codes: SE11 (Data Dictionary), SE14 (Database Utility), SE80 (Object Navigator).
  Database Management: Understanding how to manage indexes and constraints in your specific database (e.g., Oracle, SQL Server, HANA) is crucial.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  Testing: After making changes, ensure to test the application thoroughly to confirm that the issue is resolved and that no new issues have been introduced.
  
  If the problem persists after following these steps, it may be beneficial to engage SAP support for further assistance.