How To Fix TC021 - Trace disabled in system: Unable to read switch

TC021 - Overview

• Message type: E = Error

• Message class: TC - System trace. (RSTR....)

• Message number: 021

• Message text: Trace disabled in system: Unable to read switch

What causes this issue?

You tried to read the individual trace switches from the current
system. However, the trace mechanism is completely switched off. The
individual switches are then invalid.

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?

The editor contents remain unchanged. You can retrieve them from the
database or buffer, or maintain them manually.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message TC021 - Trace disabled in system: Unable to read switch ?

  The SAP error message "TC021 Trace disabled in system: Unable to read switch" typically indicates that the system is unable to read the trace settings due to the trace being disabled. This can occur for various reasons, including configuration issues or system settings.
  
  Cause:
  
  Trace Disabled: The trace functionality may be disabled in the system configuration.
  Authorization Issues: The user may not have the necessary authorizations to access or modify trace settings.
  System Configuration: There may be issues with the configuration of the tracing parameters in the system.
  Technical Issues: There could be underlying technical issues with the SAP system that prevent it from reading the trace settings.
  
  
  Solution:
  
  Enable Trace: Check the system settings to ensure that tracing is enabled. This can typically be done in transaction ST01 (System Trace) or ST05 (SQL Trace).
  Check Authorizations: Ensure that the user has the necessary authorizations to access and modify trace settings. You may need to consult with your