How To Fix RSMIGR256 - Second parallel execution

RSMIGR256 - Overview

• 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