How To Fix GS405 - The group is already being processed by user &

SAP Error Message - Details

• Message type: E = Error

• Message class: GS - Sets

• Message number: 405

• Message text: The group is already being processed by user &

What causes this issue?

You tried to block group &V2& in order to change it.

System Response

The group was already blocked for processing by user &V1&.

How to fix this error?

If you are actually working on the group yourself in a different
window, exit this processing and then repeat the activity that led to
this error message.
If the group was not blocked by you, wait ntil the group has been
released by the other user and then repeat the activity that led to
this error message.
If the group remains blocked for a long time or the processing of the
group is blocked by another user, inform your system administrator,
giving the name of the user blocking the group as well as the name and
controlling area of the blocked group.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message GS405 - The group is already being processed by user & ?

  The SAP error message GS405, which states "The group is already being processed by user &," typically occurs in the context of group processing in SAP, such as when dealing with batch jobs, mass changes, or similar operations. This error indicates that the group you are trying to process is currently being handled by another user, which prevents you from executing the same operation simultaneously.
  Cause:
  
  Concurrent Processing: Another user or session is already processing the same group, leading to a lock on that group.
  Long-Running Processes: If a previous operation on the group is taking longer than expected, it may still be in progress when you attempt to start a new operation.
  System Locking Mechanism: SAP uses locking mechanisms to prevent data inconsistencies, and this error is a result of that mechanism.
  
  Solution:
  
  Wait and Retry: If the operation is being processed by another user, the simplest solution is to wait until that user completes their task and then try again.
  Check Active Sessions: Use transaction codes like SM50 or SM66 to monitor active processes and see if another user is indeed processing the group. If you have the necessary permissions, you can check who is processing the group.
  Communicate with Users: If you identify the user who is processing the group, you can communicate with them to understand when they expect to finish.
  Terminate Long-Running Processes: If you have the authority and it is appropriate to do so, you can terminate the long-running process using transaction SM50 or SM66. However, be cautious with this approach as it may lead to data inconsistencies.
  Check for Background Jobs: If the processing is happening in the background, check transaction SM37 to see if there are any background jobs running that might be processing the group.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with transaction codes like SM50 (Process Overview), SM66 (Global Process Overview), and SM37 (Job Monitoring) to manage and monitor processes effectively.
  Lock Management: Understanding SAP's lock management can help you troubleshoot similar issues in the future. You can use transaction SM12 to view and manage locks.
  User Communication: Establishing a protocol for communication among users when processing shared resources can help mitigate these types of issues.
  
  If the problem persists after trying the above solutions, it may be beneficial to consult with your SAP Basis team or technical support for further assistance.