How To Fix GU012 - The secondary index for this function is not defined (&)

SAP Error Message - Details

• Message type: E = Error

• Message class: GU - FI-SL utilities

• Message number: 012

• Message text: The secondary index for this function is not defined (&)

What causes this issue?

You tried to display a document, and entered the document number or the
reference document number to do so. You can only access the document if
the appropriate FISL line-item table has a valid secondary key. However,
the system could not find this key.

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?

Check your FI-SL line-item tables.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message GU012 - The secondary index for this function is not defined (&) ?

  The SAP error message GU012 indicates that a secondary index for a specific function is not defined in the system. This typically occurs when the system is trying to access a secondary index that has not been created or is not available for the specified table or function module.
  Cause:
  
  Missing Secondary Index: The secondary index that the system is trying to access has not been defined in the database.
  Incorrect Configuration: There may be a configuration issue where the system is expecting a secondary index that is not set up.
  Table Structure Changes: If there have been recent changes to the table structure, the secondary index may need to be recreated or adjusted.
  Transport Issues: If the system has been recently updated or transported, the secondary index may not have been included in the transport.
  
  Solution:
  
  
  Check Index Definition:
  
  Go to transaction code SE11 (Data Dictionary).
  Enter the name of the table that is causing the error.
  Check the "Indexes" tab to see if the required secondary index is defined.
  
  
  
  Create or Adjust the Secondary Index:
  
  If the secondary index is missing, you can create it by clicking on the "Create" button in the Indexes tab.
  Define the fields that should be included in the secondary index and save your changes.
  
  
  
  Rebuild the Index:
  
  If the index exists but is not functioning correctly, you may need to rebuild it. This can be done using transaction code SE14 (Database Utility).
  Select the table and choose the option to "Rebuild Index".
  
  
  
  Check for Transport Issues:
  
  If the issue arose after a transport, ensure that all necessary objects, including indexes, were included in the transport request.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or notes related to the specific function or table to see if there are any known issues or additional steps required.
  
  
  
  Contact SAP Support:
  
  If the issue persists after trying the above solutions, consider reaching out to SAP support for further assistance.
  
  
  
  Related Information:
  
  Transaction Codes:
  
  SE11: Data Dictionary
  SE14: Database Utility
  
  
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional guidance.
  Performance Considerations: Secondary indexes can improve query performance, so it's important to ensure they are properly defined and maintained.
  
  By following these steps, you should be able to resolve the GU012 error and ensure that the necessary secondary index is defined and functioning correctly in your SAP system.