How To Fix ARUN_MAIN075 - Communication failure; RFC destination &1

SAP Error Message - Details

• Message type: E = Error

• Message class: ARUN_MAIN -

• Message number: 075

• Message text: Communication failure; RFC destination &1

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 ARUN_MAIN075 - Communication failure; RFC destination &1 ?

  The SAP error message ARUN_MAIN075 indicates a communication failure with a specified RFC (Remote Function Call) destination. This error typically arises when there is an issue with the connection between the SAP system and the target system defined in the RFC destination.
  Causes:
  
  Network Issues: There may be network connectivity problems between the SAP system and the target system.
  Incorrect RFC Destination Configuration: The RFC destination may be incorrectly configured, including wrong parameters such as the target system's IP address, port, or system ID.
  Authorization Issues: The user credentials used for the RFC connection may not have the necessary authorizations to access the target system.
  Target System Down: The target system may be down or not reachable due to maintenance or other issues.
  Firewall Restrictions: Firewalls may be blocking the communication between the two systems.
  SAP Gateway Issues: The SAP Gateway service may not be running or may be misconfigured.
  
  Solutions:
  
  
  Check Network Connectivity:
  
  Use tools like ping or traceroute to verify that the SAP system can reach the target system.
  Ensure that there are no network outages or issues.
  
  
  
  Verify RFC Destination Configuration:
  
  Go to transaction SM59 in the SAP GUI.
  Check the configuration of the RFC destination that is causing the error. Ensure that the connection parameters (like the target host, system number, and client) are correct.
  Test the connection using the "Test Connection" button in SM59.
  
  
  
  Check User Authorizations:
  
  Ensure that the user credentials used for the RFC connection have the necessary authorizations in the target system.
  You may need to check the user roles and profiles in both the source and target systems.
  
  
  
  Check Target System Status:
  
  Verify that the target system is up and running. You can check this by logging into the target system directly or checking with your system administrator.
  
  
  
  Review Firewall Settings:
  
  Ensure that any firewalls between the two systems allow traffic on the required ports for RFC communication (typically TCP port 3200 for SAP).
  
  
  
  Check SAP Gateway:
  
  Ensure that the SAP Gateway service is running on both the source and target systems. You can check this using transaction SMGW.
  Look for any error messages in the gateway logs that might indicate issues.
  
  
  
  Review Logs:
  
  Check the system logs (transaction SM21) and the developer trace files (transaction ST11) for any additional error messages that might provide more context about the failure.
  
  
  
  Related Information:
  
  RFC Destinations: RFC destinations are defined in transaction SM59 and are used to establish connections between SAP systems or between SAP and non-SAP systems.
  SAP Notes: Check SAP Notes for any known issues or patches related to the error message. You can search for relevant notes in the SAP Support Portal.
  Documentation: Refer to SAP documentation for detailed information on configuring RFC destinations and troubleshooting communication issues.
  
  By following these steps, you should be able to identify and resolve the communication failure indicated by the ARUN_MAIN075 error message.