How To Fix 0S056 - You have not selected a trace to switch on

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 056

• Message text: You have not selected a trace to switch on

What causes this issue?

You have not selected a field. This means you have not selected a trace
to switch on.

System Response

Program processing continues after the message.

How to fix this error?

Select one or several trace types to switch on. To do this, select the
designated field.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message 0S056 - You have not selected a trace to switch on ?

  The SAP error message 0S056 ("You have not selected a trace to switch on") typically occurs when a user attempts to activate a trace in the SAP system but has not specified which trace to activate. This can happen in various contexts, such as when using transaction codes for performance analysis or debugging.
  Cause:
  The error is caused by the following reasons:
  
  No Trace Selected: The user has not selected any specific trace type to activate.
  Incorrect Configuration: The trace settings may not be properly configured in the system.
  User Permissions: The user may not have the necessary permissions to activate traces.
  
  Solution:
  To resolve the error, follow these steps:
  
  
  Select a Trace:
  
  Go back to the trace activation screen and ensure that you select at least one trace type. This could be a performance trace, SQL trace, or any other relevant trace depending on your needs.
  
  
  
  Check Trace Configuration:
  
  Ensure that the trace types you want to activate are available and properly configured in the system. You can check this in the relevant transaction (e.g., ST01 for authorization trace, ST05 for SQL trace).
  
  
  
  User Permissions:
  
  Verify that your user account has the necessary authorizations to activate traces. You may need to consult with your SAP security administrator to ensure you have the appropriate roles assigned.
  
  
  
  Use the Correct Transaction:
  
  Make sure you are using the correct transaction code for the trace you want to activate. For example, ST01 for authorization trace, ST05 for SQL trace, etc.
  
  
  
  Consult Documentation:
  
  If you are unsure about the trace types or how to activate them, refer to the SAP documentation or help resources for guidance on using the tracing tools.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  ST01: Authorization Trace
  ST05: SQL Trace
  ST12: Combined Trace
  SM50/SM66: Process Overview (to monitor active processes)
  
  
  
  SAP Notes: Check for any relevant SAP Notes that might address specific issues related to tracing or the error message itself.
  
  
  Performance Analysis: Tracing is often used for performance analysis and debugging, so understanding the context in which you are trying to activate the trace can help in selecting the right options.
  
  
  If the problem persists after following these steps, consider reaching out to your SAP support team for further assistance.