How To Fix OE456 - Parallel processing canceled ( & RFCs failed = & % )

SAP Error Message - Details

• Message type: E = Error

• Message class: OE - IS-Oil: ITA/TPI messages

• Message number: 456

• Message text: Parallel processing canceled ( & RFCs failed = & % )

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message OE456 - Parallel processing canceled ( & RFCs failed = & % ) ?

  The SAP error message OE456, which indicates that "Parallel processing canceled ( & RFCs failed = & % )", typically occurs in the context of parallel processing tasks in SAP, particularly when using Remote Function Calls (RFCs). This error suggests that one or more of the RFCs that were supposed to be executed in parallel have failed, leading to the cancellation of the entire parallel processing task.
  Causes:
  
  
  RFC Errors: The most common cause is that one or more of the RFC calls made during the parallel processing have failed. This could be due to various reasons such as:
  
  Network issues
  Configuration problems in the RFC destination
  Authorization issues
  Errors in the called function module or program
  Timeouts or performance issues
  
  
  
  Data Issues: If the data being processed is invalid or inconsistent, it can lead to failures in the RFC calls.
  
  
  System Resource Limitations: If the system is under heavy load or if there are insufficient resources (like memory or CPU), it may lead to failures in processing.
  
  
  Configuration Issues: Incorrect settings in the parallel processing configuration can also lead to this error.
  
  
  Solutions:
  
  
  Check RFC Logs: Review the logs for the specific RFC calls that failed. You can use transaction codes like SM58 (for asynchronous RFC) or SLG1 (application log) to find detailed error messages.
  
  
  Analyze the Error Messages: Look for specific error messages associated with the failed RFCs. This will give you insights into what went wrong.
  
  
  Validate Data: Ensure that the data being processed is valid and meets the requirements of the function modules being called.
  
  
  Check System Performance: Monitor system performance and resource usage. If the system is overloaded, consider optimizing the workload or increasing system resources.
  
  
  Review Configuration: Check the configuration settings for parallel processing and RFC destinations. Ensure that they are correctly set up.
  
  
  Retry Mechanism: Implement a retry mechanism for the failed RFC calls if applicable, to handle transient issues.
  
  
  Consult SAP Notes: Look for relevant SAP Notes that might address known issues related to this error message.
  
  
  Contact SAP Support: If the issue persists and you cannot identify the root cause, consider reaching out to SAP support for further assistance.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with transaction codes like SM58 (for monitoring RFC calls), SLG1 (for application logs), and ST22 (for dump analysis) to troubleshoot issues effectively.
  Parallel Processing: Understand how parallel processing works in SAP and the implications of using it, including how to configure and monitor it.
  Performance Tuning: Consider performance tuning techniques for your SAP system to improve the efficiency of parallel processing tasks.
  
  By following these steps, you should be able to diagnose and resolve the OE456 error effectively.