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Product and Topic Expert
Product and Topic Expert


last updated: 2024-02-24

The article explains the SAP GUI – TCODE (Transaction Code): SM21 usage in details.


Transaction Code SM21 is the system log.

Video explanation by SAP Learning Hub
SAP sys logs SM21

SM21 - Tools -> Administration -> Monitor -> System Log

Screen: Display the system log
Initial screen where the required filters can be selected based on the actual need.
Basic attributes

  • Date – filter the desired date condition
  • Time – filter the desired time condition
  • User – specific user name or user name with * character (e.g. USER001 or USER*)
  • Client – filter the desired client
  • etc.

Extended attributes

  • Extended Instance Name - filter the desired instance
  • Transaction Code - filter the desired trans. code
  • Process No. - filter the desired work process
  • etc.

Screen: Syslog messages
List of the result based on the filtered criteria.

Open the item with double click on the requested row.

Screen: Syslog log details view
Further information.

Note: with "Trace" button we can go directly to the specific development trace file. Same screen than ST11.

Screen: Trace Data
The trace file which belongs to the syslog message.

Based on ‘Date’ and ‘Time’ information the error can be identified.

To export the content use menu: System -> List -> Save -> Save or Local File.

Remark: In most cases, the development trace contains all the information needed to address the issue. No further steps are required. In some cases, a deeper analysis is required and additional steps may be required; for example, when the development trace shows a database-related error message, it may be useful to check the problem from the database perspective.

✍️ Where can I find knowledge and information belongs to SAP HANA? ➡️ Full System Info Dump (FSID)

Which SAP Knowledge Base Article belongs to the topic?

  • 712706 - Program RSLGVIEW - reading the SAP system log without system
  • 2194685 - How to find work process trace for SM21 System Log or ST22 dump
  • 2399990 - How-To: Analyzing ABAP Short Dumps in SAP HANA Environments
Other articles in this series
3428763 - Bookmark of frequently used SAP GUI transaction codes for SAP HANA related investigations

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Release Information

Release DateDescription
2023.07.10First/initial Release of the SAP Blog Post documentation (Product Information).
2024.01.26SAP Community 2024 optimized content.
2024.02.06Other articles in this series section maintained.
2024.02.24Insert SAP Learning Hub video. - SAP sys logs SM21