How To Fix LTR2_UI_SL021 - RFC Destination &1 does not work: &2

SAP Error Message - Details

• Message type: E = Error

• Message class: LTR2_UI_SL -

• Message number: 021

• Message text: RFC Destination &1 does not work: &2

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message LTR2_UI_SL021 - RFC Destination &1 does not work: &2 ?

  The SAP error message LTR2_UI_SL021 indicates that there is an issue with an RFC (Remote Function Call) destination in your SAP system. The message typically states that the specified RFC destination does not work, and it provides additional details about the nature of the problem.
  Cause
  The error can be caused by several factors, including:
  
  Incorrect Configuration: The RFC destination may not be configured correctly in the SAP system.
  Network Issues: There may be network connectivity problems between the SAP system and the target system.
  Authorization Issues: The user credentials used for the RFC connection may not have the necessary authorizations.
  Target System Down: The target system that the RFC destination points to may be down or not reachable.
  Incorrect Parameters: The parameters set in the RFC destination may be incorrect or incomplete.
  
  Solution
  To resolve the issue, you can follow these steps:
  
  
  Check RFC Destination Configuration:
  
  Go to transaction SM59 in the SAP GUI.
  Locate the RFC destination mentioned in the error message.
  Verify that the configuration settings (such as connection type, target host, system number, client, user, and password) are correct.
  
  
  
  Test the Connection:
  
  In transaction SM59, select the RFC destination and use the "Connection Test" option to check if the connection is working.
  If the test fails, note the error message for further troubleshooting.
  
  
  
  Check Network Connectivity:
  
  Ensure that there are no network issues preventing access to the target system.
  You can use tools like ping or telnet to check connectivity to the target host and port.
  
  
  
  Review User Authorizations:
  
  Ensure that the user credentials used for the RFC connection have the necessary authorizations to access the target system.
  
  
  
  Check Target System Status:
  
  Verify that the target system is up and running. If it is down, you may need to contact the system administrator.
  
  
  
  Review Logs:
  
  Check the system logs (transaction SM21) and the developer trace (transaction ST22) for any additional error messages that may provide more context.
  
  
  
  Consult Documentation:
  
  If the issue persists, consult SAP documentation or support for further guidance.
  
  
  
  Related Information
  
  
  Transaction Codes:
  
  SM59: RFC Destinations
  SM21: System Log
  ST22: Dump Analysis
  SICF: HTTP Service Hierarchy (for web services)
  
  
  
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error message or provide additional troubleshooting steps.
  
  
  By following these steps, you should be able to identify and resolve the issue related to the RFC destination error in your SAP system.