How To Fix WXP171 - No connection to the BW system

SAP Error Message - Details

• Message type: E = Error

• Message class: WXP - Retail Planning

• Message number: 171

• Message text: No connection to the BW system

What causes this issue?

The system could not establish a connection to the BW system.

How to fix this error?

Check the RFC destination that was entered and contact the responsible
system administrator, if necessary.

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WXP171 - No connection to the BW system ?

  Certainly! Here's a detailed explanation for the SAP error message WXP171: No connection to the BW system:
  
  Error Message
  WXP171: No connection to the BW system
  
  Cause
  This error occurs when the SAP system (usually an SAP ERP or SAP NetWeaver system) tries to establish a connection to the SAP BW (Business Warehouse) system but fails. The failure can be due to several reasons:
  
  Network issues: The BW system is unreachable due to network problems.
  Incorrect connection parameters: The RFC destination or connection settings to the BW system are incorrect or outdated.
  BW system down: The BW system is not running or is currently unavailable.
  Authorization issues: The user or system trying to connect does not have the necessary authorizations.
  Technical problems: Issues with the RFC server, gateway, or SAP router configurations.
  Transport layer issues: Problems with the communication layer between the systems.
  
  
  Solution
  
  
  Check RFC Destination:
  
  Go to transaction SM59 in the SAP system where the error occurs.
  Verify the RFC destination used to connect to the BW system.
  Test the connection using the Test Connection button.
  If the test fails, check the connection parameters (target host, system number, user credentials).
  
  
  
  Check Network Connectivity:
  
  Ensure that the BW system is reachable from the source system.
  Use OS commands like ping or traceroute to verify network connectivity.
  Check firewall settings that might block communication.
  
  
  
  Check BW System Status:
  
  Verify that the BW system is up and running.
  Check the system log (transaction SM21) and system status.
  Restart the BW system if necessary.
  
  
  
  Check Authorizations:
  
  Ensure the user used in the RFC destination has the required authorizations in the BW system.
  Check roles and profiles assigned to the user.
  
  
  
  Check Gateway and SAP Router:
  
  If a SAP router is used, verify its configuration.
  Check the gateway status on both systems (transactions SMGW).
  
  
  
  Review Logs and Traces:
  
  Check system logs in both systems for more detailed error messages.
  Use transaction ST22 for dumps related to the connection.
  Use transaction SM21 for system logs.
  
  
  
  Consult OSS Notes:
  
  Search SAP Support Portal for OSS notes related to WXP171 or connection issues to BW.
  
  
  
  
  Related Information
  
  Transaction SM59: Manage and test RFC destinations.
  Transaction SMGW: Gateway monitor.
  Transaction ST22: ABAP runtime error analysis.
  Transaction SM21: System log.
  SAP BW System: The target system for the connection.
  SAP Router: If used, acts as an intermediate for connections.
  SAP Notes: SAP OSS notes may provide patches or specific fixes.
  
  
  Summary
  
  
  
  Aspect
  Details
  
  
  
  
  Error
  WXP171: No connection to the BW system
  
  
  Cause
  Network issues, incorrect RFC config, BW down, authorization problems
  
  
  Solution
  Check and test RFC destination, verify network and BW system status, check authorizations, review logs
  
  
  Tools
  SM59, SMGW, ST22, SM21
  
  
  
  
  If you provide more context (e.g., when the error occurs, system landscape), I can help with more specific troubleshooting steps.