How To Fix UAS023 - Fields of index &1 are identical with the key fields

SAP Error Message - Details

• Message type: E = Error

• Message class: UAS -

• Message number: 023

• Message text: Fields of index &1 are identical with the key fields

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message UAS023 - Fields of index &1 are identical with the key fields ?

  The SAP error message UAS023 indicates that there is an issue with the definition of an index in the database. Specifically, it means that the fields defined in the index are identical to the key fields of the table. This situation is not allowed because an index should provide additional access paths to the data, and having an index that is identical to the key fields does not serve that purpose.
  Cause:
  The error typically arises when:
  
  An index is created with fields that are the same as the primary key fields of the table.
  There is a misunderstanding in the design of the database schema, where the developer intended to create a different index but mistakenly included the key fields.
  
  Solution:
  To resolve the UAS023 error, you can take the following steps:
  
  
  Review Index Definition: Check the definition of the index that is causing the error. You can do this in the Data Dictionary (SE11) by looking at the index definition for the relevant table.
  
  
  Modify the Index: If the index is indeed identical to the key fields, you will need to modify it. You can either:
  
  Remove the index if it is unnecessary.
  Create a new index that includes different fields that are not part of the primary key.
  
  
  
  Recreate the Index: If you need to keep the index for performance reasons, you may need to drop the existing index and create a new one with the appropriate fields.
  
  
  Transport Changes: If you are working in a development environment, ensure that any changes you make are transported to the appropriate environments (e.g., testing, production) as needed.
  
  
  Related Information:
  
  Transaction Codes: You can use transaction codes like SE11 (Data Dictionary) to view and modify table and index definitions.
  Documentation: Refer to SAP documentation for guidelines on creating and managing indexes.
  Performance Considerations: When designing indexes, consider the performance implications and ensure that they are optimized for the queries that will be run against the table.
  
  By following these steps, you should be able to resolve the UAS023 error and ensure that your database schema is correctly defined.