How To Fix FDT_WD_SERVICE121 - Lean trace for &1 started on &2 &3 by user &4

SAP Error Message - Details

• Message type: E = Error

• Message class: FDT_WD_SERVICE - FDT_WD: Message class for messages in SFDT_WD_SERVICE

• Message number: 121

• Message text: Lean trace for &1 started on &2 &3 by user &4

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.

Unfortunately, there isn't any extra information in this error notice.

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Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

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Smart SAP Assistant

• What is the cause and solution for SAP error message FDT_WD_SERVICE121 - Lean trace for &1 started on &2 &3 by user &4 ?

  The SAP error message FDT_WD_SERVICE121 typically relates to issues encountered in the context of the SAP Fiori or Web Dynpro applications, particularly when dealing with the FDT (Form Data Transfer) service. The message indicates that a lean trace has been initiated for a specific user and time, which can be useful for debugging purposes.
  Cause:
  
  Performance Issues: The lean trace may be triggered due to performance issues or errors occurring during the execution of a Web Dynpro application or Fiori app.
  Debugging: It can also be a result of a manual request to start a trace for debugging purposes, often initiated by a developer or support personnel.
  Configuration Errors: Misconfigurations in the application or the underlying data model can lead to unexpected behavior, prompting the need for tracing.
  Authorization Issues: Sometimes, the error can be related to insufficient authorizations for the user executing the application.
  
  Solution:
  
  Check the Trace: Review the lean trace logs to identify any specific errors or performance bottlenecks. This can provide insights into what went wrong during the execution.
  Debugging: If you are a developer, you can use the trace information to debug the application. Look for any exceptions or errors in the trace that can guide you to the root cause.
  Configuration Review: Ensure that the application is correctly configured. Check for any missing or incorrect settings in the application configuration.
  Authorization Check: Verify that the user has the necessary authorizations to execute the application. You can check the user roles and permissions in the SAP system.
  Performance Tuning: If performance issues are identified, consider optimizing the application code or database queries to improve response times.
  SAP Notes: Check for any relevant SAP Notes or updates that may address known issues related to the error message.
  
  Related Information:
  
  Transaction Codes: You may want to use transaction codes like ST22 (Dump Analysis) or SM21 (System Log) to gather more information about the error.
  SAP Community: Engaging with the SAP Community forums can provide additional insights and solutions from other users who may have encountered similar issues.
  Documentation: Refer to the official SAP documentation for Web Dynpro and Fiori applications for best practices and troubleshooting steps.
  
  If the issue persists after following these steps, consider reaching out to SAP support for further assistance.