How To Fix 0S020 - Heading & not defined in SQL trace list

SAP Error Message - Details

• Message type: E = Error

• Message class: 0S - Messages for the SQL trace

• Message number: 020

• Message text: Heading & not defined in SQL trace list

What causes this issue?

This is an internal error.

System Response

The system terminates the display of the trace list.

How to fix this error?

As this is an internal error, you cannot correct the error. Try to
reproduce the error and then contact the SAP Hotline.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message 0S020 - Heading & not defined in SQL trace list ?

  The SAP error message "0S020 Heading & not defined in SQL trace list" typically indicates that there is an issue with the SQL trace configuration or the way the SQL trace is being utilized in the SAP system. This error can occur when the system is trying to reference a heading or a label that has not been defined in the SQL trace list.
  Cause:
  
  Missing Definition: The heading or label that is being referenced in the SQL trace is not defined in the system. This could be due to a configuration issue or a missing entry in the relevant tables.
  Incorrect SQL Trace Configuration: The SQL trace may not be set up correctly, leading to the system being unable to find the required headings.
  Custom Development: If there are custom programs or enhancements that utilize SQL tracing, they may not be correctly handling the headings.
  
  Solution:
  
  
  Check SQL Trace Configuration:
  
  Go to transaction code ST05 (SQL Trace).
  Ensure that the SQL trace is properly configured and that the necessary headings are defined.
  If you are using a custom trace, verify that all required headings are included.
  
  
  
  Review Custom Code:
  
  If the error is occurring in a custom program, review the code to ensure that it is correctly referencing the headings defined in the SQL trace.
  Make sure that any custom SQL trace logic is aligned with the standard SAP practices.
  
  
  
  Update or Define Missing Headings:
  
  If you identify that a specific heading is missing, you may need to define it in the relevant configuration settings or tables.
  Consult the SAP documentation or your SAP Basis team for guidance on how to add or modify headings in the SQL trace.
  
  
  
  Check for Notes and Patches:
  
  Sometimes, specific errors are addressed in SAP Notes or patches. Check the SAP Support Portal for any relevant notes that might address this issue.
  
  
  
  Consult SAP Support:
  
  If the issue persists after checking the above points, consider reaching out to SAP Support for further assistance. Provide them with details about the error, including any relevant transaction codes and the context in which the error occurs.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  ST05: SQL Trace
  ST12: Combined Trace
  SE80: Object Navigator (for checking custom developments)
  
  
  
  Documentation: Refer to the SAP Help Portal for documentation on SQL tracing and performance analysis.
  
  
  SAP Notes: Search for specific SAP Notes related to SQL trace issues in the SAP Support Portal.
  
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.