How To Fix F7602 - Error while calling RFC destination

SAP Error Message - Details

• Message type: E = Error

• Message class: F7 - Program Error Messages

• Message number: 602

• Message text: Error while calling RFC destination

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 F7602 - Error while calling RFC destination ?

  The SAP error message F7602, which indicates "Error while calling RFC destination," typically occurs when there is an issue with the Remote Function Call (RFC) connection to another SAP system or external system. This error can arise due to various reasons, including configuration issues, network problems, or authorization issues.
  Causes of F7602 Error
  
  
  RFC Destination Configuration: The RFC destination may not be correctly configured in the SAP system. This includes incorrect parameters such as the target system's IP address, system number, or client.
  
  
  Network Issues: There may be network connectivity problems between the SAP system and the target system. This could be due to firewalls, routing issues, or network outages.
  
  
  Authorization Issues: The user credentials used for the RFC call may not have the necessary authorizations to access the target system.
  
  
  Target System Down: The target system may be down or not reachable, leading to the inability to establish a connection.
  
  
  SAP Kernel or Version Issues: There may be compatibility issues between different SAP versions or kernel versions.
  
  
  Incorrect User Credentials: The username or password used for the RFC connection may be incorrect.
  
  
  Solutions to F7602 Error
  
  
  Check RFC Destination Configuration:
  
  Go to transaction SM59 in the SAP GUI.
  Verify the settings of the RFC destination (e.g., connection type, target host, system number, client).
  Test the connection using the "Connection Test" button.
  
  
  
  Network Connectivity:
  
  Ensure that the network connection between the SAP system and the target system is stable.
  Check for any firewall rules that may be blocking the connection.
  
  
  
  Authorization Check:
  
  Ensure that the user used for the RFC connection has the necessary authorizations in both the source and target systems.
  You can check user roles and authorizations in transaction SU01.
  
  
  
  Check Target System Status:
  
  Verify that the target system is up and running. You can do this by trying to log in to the target system directly.
  
  
  
  Review SAP Notes:
  
  Check for any relevant SAP Notes that may address known issues with RFC connections or specific error codes.
  
  
  
  User Credentials:
  
  Double-check the username and password used for the RFC connection to ensure they are correct.
  
  
  
  System Logs:
  
  Review the system logs (transaction SM21) for any additional error messages that may provide more context about the issue.
  
  
  
  Contact Basis Team:
  
  If the issue persists, it may be necessary to involve your SAP Basis team for further investigation, especially if it involves network or system configuration.
  
  
  
  Related Information
  
  
  Transaction Codes:
  
  SM59: Manage RFC Destinations
  SU01: User Maintenance
  SM21: System Log
  ST22: Dump Analysis
  
  
  
  SAP Documentation: Refer to the official SAP Help Portal for detailed documentation on RFC connections and troubleshooting.
  
  
  SAP Community: Engage with the SAP Community forums for insights and solutions from other users who may have encountered similar issues.
  
  
  By following these steps, you should be able to diagnose and resolve the F7602 error effectively.