How To Fix SDS_COMMON039 - Number of aRFC processes must be 1 or greater than 1

SAP Error Message - Details

• Message type: E = Error

• Message class: SDS_COMMON -

• Message number: 039

• Message text: Number of aRFC processes must be 1 or greater than 1

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SDS_COMMON039 - Number of aRFC processes must be 1 or greater than 1 ?

  The SAP error message SDS_COMMON039 indicates that there is an issue with the configuration of asynchronous Remote Function Call (aRFC) processes in your SAP system. This error typically arises when the number of aRFC processes is set to zero or is not configured correctly, which prevents the system from processing asynchronous calls.
  Cause:
  
  Configuration Issue: The number of aRFC processes is set to zero or is not defined properly in the system configuration.
  System Parameters: The relevant parameters for aRFC processes may not be set correctly in the instance profile.
  Transport Layer Issues: If the transport layer is not configured properly, it can lead to this error.
  
  Solution:
  To resolve the SDS_COMMON039 error, follow these steps:
  
  
  Check and Update Instance Profile:
  
  Go to transaction RZ10 (Profile Maintenance).
  Select the instance profile you are using (e.g., DEFAULT.PFL or your specific instance profile).
  Look for the parameter rdisp/wp_no_aRFC and ensure it is set to a value of 1 or greater. This parameter controls the number of aRFC processes.
  If it is set to 0 or not defined, change it to a value of 1 or more.
  
  
  
  Activate Changes:
  
  After making changes to the instance profile, save the changes and restart the SAP instance for the changes to take effect.
  
  
  
  Check Other Related Parameters:
  
  Ensure that other related parameters such as rdisp/wp_no_btc (for background work processes) and rdisp/wp_no_dia (for dialog work processes) are also configured correctly, as they can impact overall system performance.
  
  
  
  Monitor System Performance:
  
  After making the changes, monitor the system to ensure that the aRFC processes are functioning correctly and that there are no further issues.
  
  
  
  Consult SAP Notes:
  
  If the problem persists, check the SAP Support Portal for any relevant SAP Notes that may provide additional guidance or patches related to this error.
  
  
  
  Related Information:
  
  Transaction Codes: 
  
  RZ10: Profile Maintenance
  RZ11: Profile Parameter Display
  SM51: List of SAP Systems
  SM37: Job Monitoring
  
  
  Documentation: Refer to the SAP Help Portal for detailed documentation on aRFC and related configuration settings.
  SAP Community: Engage with the SAP Community forums for discussions and solutions shared by other SAP users who may have encountered similar issues.
  
  By following these steps, you should be able to resolve the SDS_COMMON039 error and ensure that your SAP system can handle aRFC processes correctly.