How To Fix /SAPAPO/OM027 - & should not run parallel

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/OM -

• Message number: 027

• Message text: & should not run parallel

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/OM027 - & should not run parallel ?

  The SAP error message /SAPAPO/OM027 typically relates to issues in the Advanced Planning and Optimization (APO) module, particularly in the context of planning runs or data processing. The message indicates that a certain operation cannot be executed in parallel with another operation, which can lead to data inconsistencies or conflicts.
  Cause:
  
  
  Concurrent Execution: The error usually arises when multiple planning runs or processes are attempted to be executed simultaneously. This can happen if:
  
  Two or more users are trying to run the same planning job at the same time.
  A background job is scheduled to run while a user-initiated job is already in progress.
  
  
  
  Locking Mechanism: SAP uses a locking mechanism to prevent data inconsistencies. If one process is holding a lock on a resource, another process trying to access that resource will be blocked, leading to this error.
  
  
  Configuration Issues: Sometimes, the configuration settings in APO may not be set up to allow parallel processing for certain jobs.
  
  
  Solution:
  
  
  Check Running Jobs: Before starting a new planning run, check if there are any existing jobs running that might conflict. You can do this by:
  
  Using transaction codes like SM37 to monitor background jobs.
  Ensuring that no other users are executing the same planning run.
  
  
  
  Sequential Execution: If you find that jobs are running in parallel, you may need to schedule them to run sequentially. This can be done by:
  
  Adjusting the job scheduling in transaction SM36 to ensure that jobs do not overlap.
  Communicating with team members to coordinate job execution.
  
  
  
  Review Configuration: If the issue persists, review the configuration settings in APO to ensure that they are set up correctly for your planning processes. This may involve:
  
  Consulting with your SAP Basis or APO configuration team to understand the settings related to parallel processing.
  
  
  
  Error Logs: Check the error logs for more detailed information about the error. This can provide insights into what specific processes are causing the conflict.
  
  
  SAP Notes: Look for relevant SAP Notes that may address this specific error. SAP frequently updates its knowledge base with solutions for known issues.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with transaction codes like SM37 (Job Monitoring), SM36 (Job Scheduling), and SCC4 (Client Administration) for managing jobs and configurations.
  Documentation: Review SAP documentation related to APO and planning runs for best practices on job scheduling and execution.
  User Coordination: Establish a protocol within your team to avoid running conflicting jobs, especially during peak planning times.
  
  If the problem continues after following these steps, it may be beneficial to reach out to SAP support for further assistance.