How To Fix HH075 - This 'unique' index is 'disabled'

SAP Error Message - Details

• Message type: E = Error

• Message class: HH - (Long) text for check tool 'infcfgcheck'

• Message number: 075

• Message text: This 'unique' index is 'disabled'

What causes this issue?

The specified 'unique' index is still defined, but currently
'disabled'. This is a dangerous condition because:
The columns are no longer unique
Access times are longer as the index tree is gone

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

System Response

How to fix this error?

Determine whether the corresponding table is still in use (that is, it
is not a test or demo table).
If yes, 'enable' the index as follows:
Access the index definition using 'dbschema'
Activate the index using 'set index for ... enabled' in 'dbaccess'
This process may not be successful if the relevant column contents are
no longer unique. If this occurs, you must check beforehand (at the
application level) which records need to be deleted.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message HH075 - This 'unique' index is 'disabled' ?

  The SAP error message HH075, which states "This 'unique' index is 'disabled'," typically occurs when there is an attempt to insert or update a record in a database table that has a unique index, but the index is currently disabled. This can prevent the database from enforcing the uniqueness constraint, leading to potential data integrity issues.
  Cause:
  
  Disabled Unique Index: The unique index on the table has been disabled, which means that the database will not enforce the uniqueness of the values in the indexed columns.
  Data Integrity Issues: The index may have been disabled due to previous data integrity issues, or it may have been intentionally disabled for maintenance or data migration purposes.
  Database Operations: Certain database operations, such as bulk data loads or migrations, may require disabling unique indexes temporarily.
  
  Solution:
  
  
  Re-enable the Unique Index:
  
  You can re-enable the unique index using the appropriate SQL command or through the database management tools. The command may vary depending on the database system (e.g., Oracle, SQL Server, etc.).
  Example for SQL Server:
  ALTER INDEX [IndexName] ON [TableName] REBUILD;
  
  Example for Oracle:
  ALTER INDEX index_name ENABLE;
  
  
  
  
  Check for Duplicate Records:
  
  Before re-enabling the index, ensure that there are no duplicate records in the table that would violate the uniqueness constraint. You can run a query to identify duplicates.
  Example SQL query to find duplicates:
  SELECT column_name, COUNT(*)
  FROM table_name
  GROUP BY column_name
  HAVING COUNT(*) > 1;
  
  
  
  
  Data Cleanup:
  
  If duplicates are found, you will need to clean up the data by either deleting or updating the duplicate records to ensure that all values in the indexed columns are unique.
  
  
  
  Consult Documentation:
  
  Refer to the SAP documentation or your database documentation for specific instructions on managing indexes and constraints.
  
  
  
  Contact Support:
  
  If you are unsure about the steps or if the issue persists, consider reaching out to SAP support or your database administrator for assistance.
  
  
  
  Related Information:
  
  Database Management: Understanding how to manage indexes and constraints is crucial for maintaining data integrity in any database system.
  SAP Notes: Check SAP Notes for any specific guidance or patches related to this error message.
  Performance Considerations: Disabling indexes can improve performance during bulk operations, but it is essential to re-enable them afterward to maintain data integrity.
  
  By following these steps, you should be able to resolve the HH075 error and restore the functionality of the unique index in your SAP system.