How To Fix BUAVC013 - Invalid number of parallel RFC tasks

SAP Error Message - Details

• Message type: E = Error

• Message class: BUAVC - Generic message class AVC

• Message number: 013

• Message text: Invalid number of parallel RFC tasks

What causes this issue?

The specified number of parallel RFC tasks is not valid.

System Response

Parallel processing cannot be started.

How to fix this error?

Enter a valid number of parallel RFC tasks.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message BUAVC013 - Invalid number of parallel RFC tasks ?

  The SAP error message BUAVC013 indicates that there is an issue with the number of parallel Remote Function Call (RFC) tasks that are being executed. This error typically arises when the system is trying to execute more parallel RFC tasks than the configured limit allows.
  Cause:
  
  Configuration Limits: The system has a predefined limit for the number of parallel RFC tasks that can be executed. If the application or process attempts to exceed this limit, the error will occur.
  System Load: High system load or resource constraints may lead to the inability to handle additional parallel RFC calls.
  Incorrect Settings: The settings for the number of parallel RFC tasks may not be configured correctly in the system.
  
  Solution:
  
  
  Check Configuration:
  
  Go to transaction RZ10 or RZ11 to check the profile parameters related to RFC. Look for parameters like rfc/max_active or rfc/max_connections.
  Adjust the parameters to allow for a higher number of parallel RFC tasks if necessary. Be cautious with this change, as increasing the limit can lead to performance issues if the system cannot handle the load.
  
  
  
  Monitor System Performance:
  
  Use transaction SM50 or SM66 to monitor the active processes and check if there are any bottlenecks or if the system is overloaded.
  Analyze the workload and determine if there are any long-running tasks that are consuming resources.
  
  
  
  Optimize RFC Calls:
  
  Review the code or processes that are making the RFC calls. Ensure that they are optimized and not making unnecessary calls.
  Consider implementing asynchronous RFC (aRFC) or transactional RFC (tRFC) if applicable, as these can help manage parallel processing more effectively.
  
  
  
  Increase System Resources:
  
  If the system is consistently hitting the limit, consider increasing the hardware resources (CPU, memory) to better handle the load.
  
  
  
  Consult SAP Notes:
  
  Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide additional guidance.
  
  
  
  Related Information:
  
  Transaction Codes: 
  
  RZ10: Profile parameter maintenance.
  RZ11: Display or change profile parameters.
  SM50/SM66: Monitor active processes.
  
  
  SAP Documentation: Review the official SAP documentation for more details on RFC configuration and performance tuning.
  Performance Tuning: Consider engaging with SAP Basis or performance tuning experts if the issue persists after initial troubleshooting.
  
  By following these steps, you should be able to resolve the BUAVC013 error and optimize the handling of parallel RFC tasks in your SAP system.