How To Fix MQ023 - Program & has already been started

MQ023 - Overview

• 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