How To Fix UPS406 - Resource problem: Sequential processing

SAP Error Message - Details

• Message type: E = Error

• Message class: UPS - ALE Distribution Packet

• Message number: 406

• Message text: Resource problem: Sequential processing

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message UPS406 - Resource problem: Sequential processing ?

  The SAP error message UPS406, which indicates a "Resource problem: Sequential processing," typically arises in the context of the SAP system's inability to process a request due to resource constraints or configuration issues. This error is often encountered in scenarios involving background jobs, batch processing, or when multiple processes are trying to access the same resource sequentially.
  Cause:
  
  Resource Contention: The system may be trying to access a resource (like a database table or a file) that is currently locked or being used by another process.
  Sequential Processing Requirement: Some processes in SAP require that they be executed in a specific order. If a process is attempted to be executed out of order, this error may occur.
  Insufficient System Resources: The system may not have enough memory, CPU, or other resources available to handle the request.
  Configuration Issues: There may be configuration settings that enforce sequential processing for certain jobs or tasks.
  
  Solution:
  
  Check for Locks: Use transaction codes like SM12 (to check for locks) and SM21 (to check system logs) to identify if there are any locks on the resources that are causing the issue.
  Review Job Scheduling: Ensure that jobs are scheduled correctly and that there are no dependencies that are not being met. Use transaction code SM37 to monitor job statuses.
  Increase System Resources: If the issue is due to insufficient resources, consider increasing the memory or CPU allocation for the SAP system.
  Adjust Configuration: Review the configuration settings related to the processes that are causing the error. Ensure that they are set up correctly to allow for parallel processing if applicable.
  Retry the Process: Sometimes, simply retrying the process after a short wait can resolve transient issues.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SM12 (lock entries), SM21 (system log), SM37 (job monitoring), and ST22 (dump analysis).
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  System Monitoring: Regularly monitor system performance and resource usage to preemptively identify potential issues that could lead to this error.
  
  If the problem persists after trying the above solutions, it may be beneficial to consult with your SAP Basis team or reach out to SAP support for further assistance.