How To Fix SWLT003 - Problems connecting to RFC destination &1: &2&3&4

SAP Error Message - Details

• Message type: E = Error

• Message class: SWLT - Message Class for ... guess!

• Message number: 003

• Message text: Problems connecting to RFC destination &1: &2&3&4

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 SWLT003 - Problems connecting to RFC destination &1: &2&3&4 ?

  The SAP error message SWLT003 indicates that there is a problem connecting to a Remote Function Call (RFC) destination. This error can occur for various reasons, and understanding the cause is essential for troubleshooting. Here’s a breakdown of potential causes, solutions, and related information:
  Causes:
  
  Incorrect RFC Destination Configuration: The RFC destination may not be configured correctly in the SAP system.
  Network Issues: There may be network connectivity issues 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 may be down or not reachable.
  Firewall Restrictions: Firewalls may be blocking the connection to the target system.
  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.
  Ensure that the connection type, target host, and system number are correctly set.
  
  
  
  Test the Connection:
  
  In transaction SM59, select the RFC destination and use the "Connection Test" option to verify connectivity.
  
  
  
  Review Network Settings:
  
  Ensure that there are no network issues preventing access to the target system.
  Check if the target system is reachable via ping or other network tools.
  
  
  
  Check User Authorizations:
  
  Verify that the user credentials used for the RFC connection have the necessary authorizations in both the source and target systems.
  
  
  
  Check Target System Status:
  
  Ensure that the target system is up and running. You can check this by logging into the target system directly.
  
  
  
  Firewall Configuration:
  
  If applicable, check firewall settings to ensure that the necessary ports for RFC communication are open.
  
  
  
  SAP Gateway Configuration:
  
  Ensure that the SAP Gateway service is running and properly configured. You can check this in transaction SMGW.
  
  
  
  Review Logs:
  
  Check the system logs (transaction SM21) and the developer trace files (transaction ST22) for any additional error messages that may provide more context.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  SM59: RFC Destinations
  SM21: System Log
  ST22: Dump Analysis
  SMGW: Gateway Monitor
  
  
  
  Documentation: Refer to SAP Help Portal or SAP Notes for specific guidance related to your version of SAP.
  
  
  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 identify and resolve the issue causing the SWLT003 error message. If the problem persists, consider reaching out to your SAP Basis team or SAP support for further assistance.