How To Fix ICL_MAIN_OUT001 - System error in RFC call of &1; destination: &2, error: &3

SAP Error Message - Details

• Message type: E = Error

• Message class: ICL_MAIN_OUT - Jointly Used Messages of Outbound Interface

• Message number: 001

• Message text: System error in RFC call of &1; destination: &2, error: &3

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.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message ICL_MAIN_OUT001 - System error in RFC call of &1; destination: &2, error: &3 ?

  The SAP error message ICL_MAIN_OUT001 indicates a system error that occurred during a Remote Function Call (RFC) to a specified destination. This error can arise from various underlying issues, and understanding the cause and potential solutions can help in troubleshooting.
  Possible Causes:
  
  Network Issues: There may be connectivity problems between the SAP system and the RFC destination.
  Configuration Errors: The RFC destination may not be configured correctly in the SAP system.
  Authorization Issues: The user or service account used for the RFC call may not have the necessary authorizations.
  System Performance: The target system may be down, overloaded, or experiencing performance issues.
  Incorrect Parameters: The parameters being passed in the RFC call may be incorrect or not matching the expected format.
  Transport Layer Issues: Problems with the transport layer (e.g., SAP Gateway) can also lead to this error.
  
  Solutions:
  
  
  Check Network Connectivity:
  
  Ensure that the network connection between the two systems is stable and functioning.
  Use tools like ping or traceroute to diagnose network issues.
  
  
  
  Verify RFC Destination Configuration:
  
  Go to transaction SM59 in the SAP GUI and check the configuration of the RFC destination.
  Ensure that the connection type, target host, and system number are correctly set.
  
  
  
  Check Authorizations:
  
  Verify that the user or service account has the necessary authorizations to perform the RFC call.
  Use transaction SU53 to analyze authorization failures.
  
  
  
  Monitor System Performance:
  
  Check the status of the target system to ensure it is up and running.
  Look for any performance bottlenecks or issues in the system logs.
  
  
  
  Review RFC Call Parameters:
  
  Double-check the parameters being passed in the RFC call for correctness.
  Ensure that they match the expected data types and formats.
  
  
  
  Check SAP Gateway:
  
  Ensure that the SAP Gateway is running properly and is not facing any issues.
  You can check the gateway logs for any errors.
  
  
  
  Consult SAP Notes:
  
  Search for relevant SAP Notes in the SAP Support Portal that may address this specific error message or related issues.
  
  
  
  Debugging:
  
  If you have access, consider debugging the RFC call to identify where the error occurs.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  SM59: RFC Destination Configuration
  SM21: System Log
  ST22: Dump Analysis
  SU53: Authorization Check
  SM37: Job Monitoring
  
  
  
  SAP Support: If the issue persists after trying the above solutions, consider reaching out to SAP Support for further assistance, providing them with detailed logs and error messages.
  
  
  By following these steps, you should be able to identify and resolve the cause of the ICL_MAIN_OUT001 error in your SAP system.