How To Fix RU455 - No resource for parallel process exists

SAP Error Message - Details

• Message type: E = Error

• Message class: RU - Messages for order completion confirmation

• Message number: 455

• Message text: No resource for parallel process exists

What causes this issue?

The goods movements should be processed in parallel.
At the moment no new parallel process can be started because no resource
is available.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Repeat the posting of the goods movements affected at a later time.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message RU455 - No resource for parallel process exists ?

  The SAP error message RU455 "No resource for parallel process exists" typically occurs in the context of background processing or parallel processing in SAP systems. This error indicates that the system is unable to allocate the necessary resources to execute a parallel process, which can be due to various reasons.
  Causes:
  
  Insufficient Background Processing Capacity: The system may not have enough background work processes available to handle the requested parallel jobs.
  Configuration Issues: The configuration settings for background processing or parallel processing may not be set correctly.
  System Load: High system load or resource contention can lead to the unavailability of resources for parallel processing.
  Job Scheduling Conflicts: There may be conflicts with other scheduled jobs that are consuming available resources.
  User Authorizations: The user may not have the necessary authorizations to execute parallel processes.
  
  Solutions:
  
  
  Check Background Process Configuration:
  
  Go to transaction RZ10 and check the profile parameters related to background processing, such as rdisp/wp_no_btc (number of background work processes).
  Ensure that the number of background work processes is sufficient for your needs.
  
  
  
  Monitor System Load:
  
  Use transaction SM50 or SM66 to monitor the current workload on the system. Check if there are too many jobs running or if the system is under heavy load.
  If the system is overloaded, consider rescheduling some jobs to off-peak hours.
  
  
  
  Review Job Scheduling:
  
  Use transaction SM37 to check for any long-running or stuck jobs that may be consuming resources.
  Cancel or adjust the scheduling of jobs that are not critical.
  
  
  
  Adjust Parallel Processing Settings:
  
  If you are using parallel processing in your ABAP programs, review the code to ensure that it is correctly configured to handle parallel execution.
  Check the settings in the relevant transaction or program to ensure that parallel processing is enabled and configured correctly.
  
  
  
  User Authorizations:
  
  Ensure that the user executing the job has the necessary authorizations to run parallel processes. Check the user roles and profiles.
  
  
  
  System Restart:
  
  In some cases, a system restart may help to clear any resource locks or contention issues.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found effective.
  Documentation: Review SAP documentation related to background processing and parallel processing for best practices and configuration guidelines.
  
  If the issue persists after trying the above solutions, it may be necessary to involve your SAP Basis team or SAP support for further investigation.