How To Fix ESH_QL_MSG091 - Technical error on calling variant parameter serialization

SAP Error Message - Details

• Message type: E = Error

• Message class: ESH_QL_MSG - ESH Query Logging

• Message number: 091

• Message text: Technical error on calling variant parameter serialization

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.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message ESH_QL_MSG091 - Technical error on calling variant parameter serialization ?

  The SAP error message ESH_QL_MSG091 indicates a technical error that occurs during the serialization of variant parameters in the context of the Enterprise Search (ES) or the Search and Navigation functionality in SAP. This error can arise due to various reasons, including issues with the configuration, data inconsistencies, or problems with the underlying database.
  Possible Causes:
  
  Configuration Issues: Incorrect or incomplete configuration of the Enterprise Search or the search-related components.
  Data Inconsistencies: Issues with the data being processed, such as missing or corrupted entries in the database.
  System Performance: High load on the system or performance issues that prevent the serialization process from completing successfully.
  Software Bugs: Potential bugs in the SAP software or specific patches that may need to be applied.
  
  Solutions:
  
  
  Check Configuration:
  
  Review the configuration settings for the Enterprise Search and ensure that all necessary parameters are correctly set.
  Verify that the search connectors and index settings are properly configured.
  
  
  
  Data Validation:
  
  Check the data being used in the search queries for any inconsistencies or missing entries.
  Run consistency checks on the database to identify and resolve any data-related issues.
  
  
  
  System Performance:
  
  Monitor system performance and resource usage. If the system is under heavy load, consider optimizing performance or scheduling the search operations during off-peak hours.
  Check for any long-running processes that may be affecting the serialization.
  
  
  
  Review Logs:
  
  Check the SAP application logs (transaction SLG1) for more detailed error messages or stack traces that can provide additional context about the error.
  Look for any related error messages that may indicate a broader issue.
  
  
  
  Update Software:
  
  Ensure that your SAP system is up to date with the latest patches and updates. Sometimes, known issues are resolved in newer versions or patches.
  Consult the SAP Notes and Knowledge Base Articles (KBAs) for any specific notes related to this error message.
  
  
  
  Contact SAP Support:
  
  If the issue persists after trying the above solutions, consider reaching out to SAP Support for further assistance. Provide them with detailed information about the error, including any logs and the context in which the error occurs.
  
  
  
  Related Information:
  
  SAP Notes: Search for relevant SAP Notes that may address this specific error or provide guidance on troubleshooting.
  Documentation: Review the official SAP documentation for Enterprise Search and related components to ensure compliance with best practices.
  Community Forums: Engage with the SAP Community or forums where other users may have encountered similar issues and can share their solutions.
  
  By following these steps, you should be able to diagnose and resolve the ESH_QL_MSG091 error effectively.