How To Fix C+167 - Secondary index &1 from table &2 could not be activated

SAP Error Message - Details

• Message type: E = Error

• Message class: C+ -

• Message number: 167

• Message text: Secondary index &1 from table &2 could not be activated

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

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Smart SAP Assistant

• What is the cause and solution for SAP error message C+167 - Secondary index &1 from table &2 could not be activated ?

  The SAP error message C+167 indicates that a secondary index could not be activated for a specific table. This error typically arises during database operations, such as when trying to activate a secondary index after changes have been made to the underlying table structure or when there are inconsistencies in the database.
  Causes:
  
  Inconsistent Data: The data in the table may not meet the requirements for the secondary index, leading to activation failure.
  Table Structure Changes: If the structure of the table has been modified (e.g., fields added or removed), the existing secondary index may become invalid.
  Database Locking Issues: If the table is locked by another process, it may prevent the activation of the secondary index.
  Missing or Corrupted Data: If the data required for the index is missing or corrupted, the index cannot be activated.
  Database Constraints: Violations of database constraints (like unique constraints) can also prevent index activation.
  
  Solutions:
  
  Check Data Consistency: Ensure that the data in the table is consistent and meets the requirements for the secondary index. You can use transaction codes like SE11 or SE14 to analyze the table and its data.
  Rebuild the Index: If the index is invalid, you may need to drop and recreate it. This can be done using transaction SE11 (Data Dictionary) or SE14 (Database Utility).
  Check for Locks: Use transaction SM12 to check for any locks on the table. If there are locks, you may need to wait for the other processes to complete or resolve the locks.
  Review Table Structure Changes: If there have been recent changes to the table structure, ensure that the secondary index is compatible with the new structure. You may need to adjust the index definition accordingly.
  Database Consistency Check: Run a database consistency check using transaction DB02 or DBACOCKPIT to identify any issues with the database that may be affecting the index.
  Consult SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  
  Related Information:
  
  Transaction Codes: SE11 (Data Dictionary), SE14 (Database Utility), SM12 (Lock Entries), DB02 (Database Performance Monitor), DBACOCKPIT (Database Administration Cockpit).
  SAP Notes: Always check for relevant SAP Notes that may provide specific fixes or workarounds for this error.
  Documentation: Review SAP documentation related to database management and index handling for more detailed guidance.
  
  If the issue persists after trying the above solutions, it may be necessary to involve your SAP Basis team or consult SAP support for further assistance.