How To Fix /IWPGW/PGW_SERVICE401 - System fault calling facade web service method &1 on port &2

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWPGW/PGW_SERVICE -

• Message number: 401

• Message text: System fault calling facade web service method &1 on port &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 /IWPGW/PGW_SERVICE401 - System fault calling facade web service method &1 on port &2 ?

  The SAP error message /IWPGW/PGW_SERVICE401 System fault calling facade web service method &1 on port &2 typically indicates that there is a problem with the communication between the SAP system and a web service. This error can arise from various issues, including configuration problems, network issues, or problems with the web service itself.
  Possible Causes:
  
  
  Web Service Configuration Issues: The web service may not be correctly configured in the SAP system. This includes incorrect endpoint URLs, authentication issues, or missing parameters.
  
  
  Network Issues: There may be network connectivity problems between the SAP system and the web service. This could be due to firewall settings, DNS issues, or other network-related problems.
  
  
  Service Availability: The web service might be down or experiencing issues. This could be due to maintenance, server overload, or other operational problems.
  
  
  Authorization Issues: The user or service account being used to call the web service may not have the necessary permissions or roles assigned.
  
  
  Data Format Issues: The data being sent to the web service may not be in the expected format, leading to a fault in processing the request.
  
  
  Timeouts: The request to the web service may be timing out due to long processing times or network latency.
  
  
  Solutions:
  
  
  Check Web Service Configuration:
  
  Verify the endpoint URL and ensure it is correct.
  Check the authentication method and credentials being used.
  Ensure that all required parameters are being sent in the request.
  
  
  
  Test Network Connectivity:
  
  Use tools like ping or traceroute to check connectivity to the web service.
  Ensure that firewalls or security groups are not blocking the traffic.
  
  
  
  Check Web Service Status:
  
  Verify if the web service is up and running. You can do this by accessing the service directly through a browser or a tool like Postman.
  Check the service logs for any errors or issues.
  
  
  
  Review Authorization Settings:
  
  Ensure that the user or service account has the necessary roles and permissions to access the web service.
  
  
  
  Validate Data Format:
  
  Check the data being sent to the web service for correctness and compliance with the expected format (e.g., XML, JSON).
  
  
  
  Increase Timeout Settings:
  
  If timeouts are an issue, consider increasing the timeout settings in the SAP system for web service calls.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to the specific web service or error message.
  Web Service Documentation: Review the documentation for the web service to understand its requirements and limitations.
  SAP Community: Engage with the SAP Community forums for insights from other users who may have encountered similar issues.
  
  If the problem persists after trying the above solutions, it may be necessary to involve your SAP Basis team or the team responsible for the web service to conduct a deeper investigation.