How To Fix MQ023 - Program & has already been started

SAP Error Message - Details

• Message type: E = Error

• Message class: MQ - Messages for Euro Changeover Package

• Message number: 023

• Message text: Program & has already been started

What causes this issue?

You want to start a program which has already been started.

System Response

Status management ensures that a program can only be started once.

How to fix this error?

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 MQ023 - Program & has already been started ?

  The SAP error message "MQ023 Program & has already been started" typically indicates that a particular program or transaction is already running in the background or has been initiated previously, and the system is preventing a second instance from being started. This is a common safeguard in SAP to avoid conflicts or data inconsistencies that could arise from multiple instances of the same program running simultaneously.
  Causes:
  
  Multiple Instances: The program or transaction is already running in the background or foreground.
  User Lock: The user may have initiated the program and not completed it, leading to a lock on that transaction.
  System Configuration: Certain configurations in the SAP system may restrict multiple executions of the same program.
  Long-Running Processes: If the program takes a long time to execute, it may still be running when a user attempts to start it again.
  
  Solutions:
  
  Check Running Jobs: Use transaction codes like SM37 (Job Monitoring) to check if the program is currently running. If it is, you may need to wait for it to complete.
  Terminate the Job: If you find that the job is stuck or needs to be terminated, you can cancel it from the job monitoring screen.
  Log Off and Log Back In: Sometimes, simply logging off and back into the SAP system can clear any session locks.
  Check User Sessions: Use transaction AL08 to see if there are any active sessions for your user ID that might be holding onto the program.
  Contact SAP Basis Team: If the issue persists, it may be necessary to involve the SAP Basis team to investigate further, especially if it seems to be a system-wide issue.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with transaction codes like SM37 for job monitoring, AL08 for user sessions, and SM21 for system logs.
  SAP Notes: Check SAP Notes for any known issues or patches related to the specific program you are trying to run.
  Documentation: Review the documentation for the specific program or transaction to understand its expected behavior and any limitations regarding concurrent executions.
  
  By following these steps, you should be able to diagnose and resolve the "MQ023 Program & has already been started" error in SAP.