How To Fix RS_DB_DB6550 - DSO &1: Non-unique index does not exist, but is defined in metadata

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 550

• Message text: DSO &1: Non-unique index does not exist, but is defined in metadata

What causes this issue?

There is a non-unique (secondary) index for a column-organized DataStore
object defined in the metadata. However, secondary indexes are not
enabled in your system. Therefore, the index does not exist in the
database.

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?

This is expected behavior. No action is required.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message RS_DB_DB6550 - DSO &1: Non-unique index does not exist, but is defined in metadata ?

  The SAP error message RS_DB_DB6550 typically indicates that there is a mismatch between the metadata defined for a DataStore Object (DSO) and the actual database structure. Specifically, it suggests that a non-unique index that is expected to exist in the database does not actually exist, even though it is defined in the metadata.
  Cause:
  
  Metadata Mismatch: The DSO metadata may have been changed (e.g., through a transport or manual adjustment) without corresponding changes being made to the underlying database structure.
  Database Issues: The database may have been altered directly (e.g., through SQL commands) without updating the DSO metadata in SAP.
  Transport Issues: If the DSO was transported from one system to another, the transport may not have included all necessary changes, leading to inconsistencies.
  System Upgrade: An upgrade or patch may have caused inconsistencies between the DSO definition and the actual database schema.
  
  Solution:
  
  Check Metadata: Verify the DSO metadata in the SAP system. You can do this by navigating to the DSO in the Data Warehousing Workbench (transaction RSA1) and checking the definitions.
  Rebuild the DSO: If the metadata is correct but the database structure is not, you may need to rebuild the DSO. This can be done by:
  
  Deleting the DSO and recreating it (ensure you have backups and understand the implications of data loss).
  Using the "Repair" function in the DSO settings, if available.
  
  
  Database Check: Use database tools to check the actual database structure. Ensure that the non-unique index defined in the DSO metadata exists in the database.
  Transport Consistency: If the issue arose after a transport, check the transport logs and ensure that all necessary objects were included in the transport.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error. SAP frequently releases notes that provide fixes or workarounds for known issues.
  Consult Documentation: Review SAP documentation for any specific instructions related to the DSO and its indexes.
  
  Related Information:
  
  Transaction Codes: Use transaction codes like RSA1 (Data Warehousing Workbench) and SE11 (Data Dictionary) to investigate the DSO and its structure.
  SAP Support: If the issue persists, consider reaching out to SAP Support for assistance, especially if you suspect a bug or a deeper issue with the system.
  Backup: Always ensure you have a backup of your data before making significant changes to the DSO or database structure.
  
  By following these steps, you should be able to identify the cause of the RS_DB_DB6550 error and implement a solution to resolve it.