How To Fix M7256 - Report may only be active once for each client

SAP Error Message - Details

• Message type: E = Error

• Message class: M7 - Inventory Management and Physical Inventory

• Message number: 256

• Message text: Report may only be active once for each client

What causes this issue?

You attempted to start the report <DS:RE.RM07MWBU>RM07MWBU</> although
it is already running in this client. You can only start the report
once for each client.

System Response

The report will not be started again.

How to fix this error?

Switch to the session in which the report is running. You can exit it
there and start it again if required.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message M7256 - Report may only be active once for each client ?

  The SAP error message M7256, which states "Report may only be active once for each client," typically occurs when there is an attempt to execute a report that is already running or has been executed in the same client session. This is a common issue in SAP environments where multiple users or processes may try to run the same report simultaneously.
  Cause:
  
  Concurrent Execution: The report is already being executed by another user or process in the same client.
  Session Lock: The report may have a session lock that prevents it from being executed again until the first execution is completed.
  Background Job: If the report is running as a background job, it may not allow another instance to start until the current job is finished.
  
  Solution:
  
  Check Running Instances: Verify if the report is currently running. You can do this by checking the transaction code SM37 (Job Monitoring) to see if there are any active jobs for the report.
  Wait for Completion: If the report is running, wait for it to complete before attempting to run it again.
  Terminate the Job: If you find that the report is stuck or taking too long, you may need to terminate the job from SM37. Be cautious with this approach, as terminating a job can lead to data inconsistencies.
  Use Different Parameters: If applicable, try running the report with different selection parameters or in a different session to avoid conflicts.
  Contact Support: If the issue persists and you cannot identify the cause, consider reaching out to your SAP support team for further assistance.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with transaction codes like SM37 (Job Monitoring) and SM21 (System Log) to monitor jobs and logs for any issues.
  SAP Notes: Check SAP Notes for any known issues or patches related to the specific report you are trying to run.
  User Permissions: Ensure that you have the necessary permissions to execute the report, as sometimes permission issues can lead to unexpected errors.
  
  By following these steps, you should be able to resolve the M7256 error and successfully execute the report.