How To Fix LS007 - Unable to reach RFC system &1. Error: &2

SAP Error Message - Details

• Message type: E = Error

• Message class: LS - General list types

• Message number: 007

• Message text: Unable to reach RFC system &1. Error: &2

What causes this issue?

The system you specified cannot be reached. You chose &V1& as the RFC
connection.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Check the state of the called system that you want to access in RFC
connection &v1&.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message LS007 - Unable to reach RFC system &1. Error: &2 ?

  The SAP error message LS007, which states "Unable to reach RFC system &1. Error: &2," typically indicates that there is an issue with the Remote Function Call (RFC) connection to the specified system. This error can occur for various reasons, and understanding the cause and potential solutions is essential for troubleshooting.
  Causes:
  
  Network Issues: There may be network connectivity problems between the SAP system and the target RFC system.
  Incorrect RFC Destination Configuration: The RFC destination may not be configured correctly in the SAP system (transaction code SM59).
  Target System Down: The target RFC system may be down or not available.
  Authorization Issues: The user credentials used for the RFC connection may not have the necessary authorizations.
  Firewall Restrictions: Firewalls or security settings 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 Network Connectivity:
  
  Use tools like ping or traceroute to verify that the SAP system can reach the target RFC system.
  Ensure that there are no network outages or issues.
  
  
  
  Verify RFC Destination Configuration:
  
  Go to transaction code 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 using the "Test Connection" button in SM59.
  
  
  
  Check Target System Status:
  
  Ensure that the target RFC system is up and running.
  If possible, log into the target system to verify its availability.
  
  
  
  Review User Authorizations:
  
  Check the user credentials used for the RFC connection.
  Ensure that the user has the necessary authorizations to access the target system.
  
  
  
  Firewall and Security Settings:
  
  Verify that there are no firewall rules blocking the connection to the target system.
  Consult with your network/security team if necessary.
  
  
  
  Check SAP Gateway:
  
  Ensure that the SAP Gateway service is running on both the source and target systems.
  Check the gateway logs for any errors or issues.
  
  
  
  Review System Logs:
  
  Check the system logs (transaction code SM21) for any related error messages that might provide more context.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  SM59: RFC Destination Configuration
  SM21: System Log
  ST22: Dump Analysis (for ABAP runtime errors)
  SICF: Check HTTP services if applicable
  
  
  
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address specific issues related to RFC connections.
  
  
  Documentation: Review SAP documentation on RFC connections and troubleshooting for more detailed guidance.
  
  
  By following these steps, you should be able to identify and resolve the issue causing the LS007 error message. If the problem persists, consider reaching out to SAP support for further assistance.