How To Fix 1R402 - Begin processing for RFC destination &1

SAP Error Message - Details

• Message type: E = Error

• Message class: 1R - SAP Knowledge Provider

• Message number: 402

• Message text: Begin processing for 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 1R402 - Begin processing for RFC destination &1 ?

  The SAP error message "1R402 Begin processing for RFC destination &1" typically indicates an issue with the Remote Function Call (RFC) destination specified in the message. This error can occur in various scenarios, such as when trying to execute a remote function module or when there are issues with the connection to the target system.
  Causes:
  
  Incorrect RFC Destination Configuration: The RFC destination may not be configured correctly in the SAP system.
  Network Issues: There may be network connectivity problems between the SAP systems.
  Authorization Issues: The user credentials used for the RFC connection may not have the necessary authorizations.
  Target System Down: The target system specified in the RFC destination may be down or not reachable.
  Firewall Restrictions: Firewalls may be blocking the communication between the systems.
  SAP Gateway Issues: The SAP Gateway service may not be running or may be misconfigured.
  
  Solutions:
  
  
  Check RFC Destination Configuration:
  
  Go to transaction SM59 and check the configuration of the RFC destination &1.
  Ensure that the connection type (e.g., T, 3, etc.) is appropriate for your use case.
  Test the connection using the "Connection Test" option in SM59.
  
  
  
  Verify Network Connectivity:
  
  Use tools like ping or telnet to check if the target system is reachable from the source system.
  Ensure that the hostname and port specified in the RFC destination are correct.
  
  
  
  Check User Authorizations:
  
  Ensure that the user credentials used for the RFC connection have the necessary authorizations to execute the required functions.
  
  
  
  Check Target System Status:
  
  Verify that the target SAP system is up and running. You can check this by logging into the target system directly.
  
  
  
  Review Firewall Settings:
  
  Ensure that any firewalls between the systems allow traffic on the required ports for RFC communication.
  
  
  
  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.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  SM59: Manage RFC Destinations
  SMGW: SAP Gateway Monitor
  ST22: Dump Analysis (to check for any ABAP runtime errors)
  SICF: Check HTTP services if using HTTP RFC
  
  
  
  Logs and Traces:
  
  Check the system logs (SM21) and developer traces (ST11) for any additional error messages that may provide more context.
  
  
  
  SAP Notes: 
  
  Search for relevant SAP Notes in the SAP Support Portal that may address specific issues related to RFC connections.
  
  
  
  By following these steps, you should be able to diagnose and resolve the issue related to the RFC destination error message.