How To Fix GH020 - In index '&', field & is unnecessary

SAP Error Message - Details

• Message type: E = Error

• Message class: GH - Help functions and tools in FI-SL

• Message number: 020

• Message text: In index '&', field & is unnecessary

What causes this issue?

The index &V1& in the table &V3& has a fixed definition. The field &V2&
is unnecessary for the definition of this index.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Remove the field &V2&.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message GH020 - In index '&', field & is unnecessary ?

  The SAP error message GH020 indicates that there is an issue with an index definition in the database. Specifically, it means that a field included in the index is unnecessary, likely because it does not contribute to the uniqueness of the index or is redundant.
  Cause:
  
  Redundant Field: The field specified in the error message is not needed for the index because it does not help in differentiating records.
  Index Definition: The index may have been defined incorrectly, including fields that do not add value to the index.
  Database Changes: Changes in the underlying database structure or data model may have rendered certain fields in the index unnecessary.
  
  Solution:
  
  Review Index Definition: Check the definition of the index in question. You can do this using transaction codes like SE11 (Data Dictionary) or SE14 (Database Utility).
  Remove Unnecessary Fields: If you identify that the field is indeed unnecessary, you can modify the index to remove the field. This can be done in the Data Dictionary (SE11) by editing the index.
  Rebuild the Index: After making changes, you may need to rebuild the index to ensure that it is functioning correctly without the unnecessary field.
  Test the Changes: After modifying the index, test the application or transaction that was causing the error to ensure that the issue is resolved.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with transaction codes like SE11 (Data Dictionary), SE14 (Database Utility), and SE80 (Object Navigator) for managing database objects.
  Documentation: Refer to SAP documentation or help resources for more details on index management and best practices.
  Performance Considerations: Removing unnecessary fields from indexes can improve database performance, as it reduces the size of the index and speeds up data retrieval operations.
  
  If you are unsure about making changes to the index, it is advisable to consult with a database administrator or an SAP expert to avoid any unintended consequences.