How To Fix WS_TOOL175 - RFC connection to original proxy system &1 failed via RFCDEST &2

SAP Error Message - Details

• Message type: E = Error

• Message class: WS_TOOL - Message Class for Web Services and Virtual Endpoints

• Message number: 175

• Message text: RFC connection to original proxy system &1 failed via RFCDEST &2

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message WS_TOOL175 - RFC connection to original proxy system &1 failed via RFCDEST &2 ?

  Certainly! Here's a detailed explanation for the SAP error message:
  
  SAP Error Message:
  WS_TOOL175: RFC connection to original proxy system &1 failed via RFCDEST &2
  
  Meaning / Cause:
  This error occurs when an SAP system tries to communicate with a proxy system (usually another SAP system or a middleware system) via an RFC destination, but the RFC connection fails. The placeholders:
  
  &1 = Name of the original proxy system (target system)
  &2 = Name of the RFC destination used to connect
  
  Common causes include:
  
  
  RFC Destination Issues:
  
  The RFC destination &2 is not correctly configured.
  The destination is inactive or has connection errors.
  Incorrect target host, system number, or client in the RFC destination.
  Missing or incorrect logon credentials (user/password).
  
  
  
  Network Problems:
  
  Network connectivity issues between the source system and the target system.
  Firewall blocking the RFC port.
  
  
  
  Target System Issues:
  
  The target system (&1) is down or not reachable.
  The target system's gateway is not running.
  The target system is not configured to accept RFC calls from the source system.
  
  
  
  Authorization Problems:
  
  The user used in the RFC destination does not have sufficient authorizations.
  The user is locked or password expired.
  
  
  
  Proxy Configuration Issues:
  
  The proxy system (&1) is not properly registered or configured.
  The proxy object or service is not active or incorrectly defined.
  
  
  
  
  Solution / Troubleshooting Steps:
  
  
  Check RFC Destination:
  
  Go to transaction SM59 in the source system.
  Test the RFC destination &2 using the "Test Connection" and "Test Authorization" buttons.
  Verify the target host, system number, client, user, and password.
  Correct any errors found.
  
  
  
  Check Network Connectivity:
  
  Ping the target host from the source system server.
  Check if the SAP gateway port is open and reachable.
  Verify firewall settings.
  
  
  
  Check Target System Status:
  
  Ensure the target system (&1) is up and running.
  Check the gateway status in the target system (transaction SMGW).
  Verify that the target system accepts RFC calls.
  
  
  
  Check User Authorizations:
  
  Verify the user used in the RFC destination is not locked or expired.
  Check authorizations for the user in the target system.
  
  
  
  Check Proxy Configuration:
  
  Verify the proxy system registration and configuration.
  Check the proxy object and service definitions.
  Re-generate or re-import proxy objects if necessary.
  
  
  
  Review Logs:
  
  Check system logs (transaction SM21) and developer traces (transaction ST11) for more detailed error messages.
  Check the target system logs for incoming RFC errors.
  
  
  
  
  Related Information:
  
  Transaction SM59: Manage and test RFC destinations.
  Transaction SMGW: SAP Gateway Monitor.
  Transaction SXMB_MONI: Monitor proxy messages (if related to PI/PO or proxy communication).
  SAP Notes: Search for specific SAP Notes related to WS_TOOL175 for known bugs or patches.
  Proxy Communication: This error often appears in scenarios involving SAP PI/PO, SAP Gateway, or proxy-based communication.
  
  
  Summary:
  
  
  
  Aspect
  Details
  
  
  
  
  Error
  WS_TOOL175: RFC connection to proxy system &1 failed via RFCDEST &2
  
  
  Cause
  RFC destination &2 misconfigured, network issues, target system down, authorization problems, or proxy config errors
  
  
  Solution
  Check and test RFC destination, verify network and target system status, check user authorizations, review proxy setup
  
  
  Tools
  SM59, SMGW, SM21, ST11, SXMB_MONI
  
  
  
  
  If you provide the actual system names or RFC destination names, I can help you with more specific checks or commands.