How To Fix /FLDQ/AD_TECH_ERRORS572 - No RFC Servers are available.

SAP Error Message - Details

• Message type: E = Error

• Message class: /FLDQ/AD_TECH_ERRORS -

• Message number: 572

• Message text: No RFC Servers are available.

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /FLDQ/AD_TECH_ERRORS572 - No RFC Servers are available. ?

  The SAP error message /FLDQ/AD_TECH_ERRORS572 No RFC Servers are available typically indicates that the system is unable to connect to the Remote Function Call (RFC) servers that are required for executing certain functions or transactions. This can occur in various scenarios, such as when trying to access external systems, perform remote function calls, or execute background jobs that require RFC communication.
  Causes:
  
  
  RFC Destination Configuration Issues: The RFC destination may not be configured correctly in the SAP system. This includes incorrect connection parameters, such as the target system's hostname, service, or user credentials.
  
  
  Network Issues: There may be network connectivity problems between the SAP system and the target RFC server. This could be due to firewall settings, network outages, or incorrect routing.
  
  
  RFC Server Availability: The target RFC server may be down or not running. This could be due to maintenance, crashes, or other operational issues.
  
  
  Authorization Issues: The user credentials used for the RFC connection may not have the necessary authorizations to access the target system.
  
  
  SAP Gateway Issues: The SAP Gateway service may not be running or may be misconfigured, preventing the establishment of RFC connections.
  
  
  Solutions:
  
  
  Check RFC Destination:
  
  Go to transaction SM59 in the SAP GUI.
  Verify the configuration of the RFC destination that you are trying to use. Ensure that the connection parameters (like target host, service, and user credentials) are correct.
  Test the connection using the "Connection Test" button.
  
  
  
  Network Troubleshooting:
  
  Check network connectivity between the SAP system and the target RFC server. You can use tools like ping or telnet to verify connectivity.
  Ensure that any firewalls or network security settings allow traffic on the required ports.
  
  
  
  Check RFC Server Status:
  
  Verify that the target RFC server is up and running. If it is down, coordinate with the system administrators to bring it back online.
  
  
  
  Review User Authorizations:
  
  Ensure that the user credentials used for the RFC connection have the necessary authorizations to access the target system. You may need to check roles and profiles assigned to the user.
  
  
  
  Check SAP Gateway:
  
  Ensure that the SAP Gateway service is running. You can check this in transaction SMGW.
  Review the gateway logs for any errors or issues that may indicate why the connection cannot be established.
  
  
  
  Consult SAP Notes:
  
  Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  SM59: Manage RFC Destinations
  SMGW: Monitor SAP Gateway
  SICF: Maintain HTTP Services (if applicable)
  
  
  
  Logs and Traces:
  
  Check the system logs (SM21) and developer traces (ST22) for any related error messages that could provide more context.
  
  
  
  SAP Community and Support: If the issue persists, consider reaching out to the SAP Community or SAP Support for further assistance, providing them with detailed information about the error and the steps you have already taken.
  
  
  By following these steps, you should be able to diagnose and resolve the issue related to the RFC server availability error in SAP.