How To Fix RSMIGR256 - Second parallel execution

SAP Error Message - Details

• Message type: E = Error

• Message class: RSMIGR - Messages during migration

• Message number: 256

• Message text: Second parallel execution

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message RSMIGR256 - Second parallel execution ?

  The SAP error message RSMIGR256, which indicates "Second parallel execution," typically occurs during data migration processes, particularly when using the SAP Migration Cockpit or similar tools. This error suggests that a parallel execution of a migration process is already in progress, and the system does not allow a second instance of the same process to run concurrently.
  Cause:
  
  Concurrent Execution: The most common cause of this error is that a migration job is already running in the background. SAP does not allow multiple instances of the same migration job to run simultaneously to prevent data inconsistencies and resource contention.
  Job Scheduling: If the migration job was scheduled to run at a specific time, and you attempt to start it manually while it is already running, this error will occur.
  System Configuration: In some cases, system settings or configurations may inadvertently allow for multiple executions, leading to this error.
  
  Solution:
  
  Check Running Jobs: Use transaction codes like SM37 (Job Monitoring) to check if there are any active jobs related to the migration process. If you find a job that is currently running, you may need to wait for it to complete.
  Cancel or Delete Jobs: If you determine that a job is stuck or needs to be restarted, you can cancel or delete it from the job monitoring screen.
  Review Logs: Check the logs for the running job to understand its status and any potential issues that may have caused it to hang.
  Sequential Execution: Ensure that you are executing migration jobs sequentially and not attempting to start a new job until the previous one has completed.
  System Resources: If the system is under heavy load, consider optimizing resource allocation or scheduling jobs during off-peak hours to avoid conflicts.
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to RSMIGR256 for any specific patches or updates that may address this issue.
  Documentation: Review the official SAP documentation for the Migration Cockpit or the specific migration tool you are using for best practices and troubleshooting steps.
  Community Forums: Engage with SAP community forums or support channels for insights from other users who may have encountered similar issues.
  
  By following these steps, you should be able to resolve the RSMIGR256 error and successfully complete your migration process.