How To Fix /IWPGW/PGW_SERVICE402 - Application 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: 402

• Message text: Application 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_SERVICE402 - Application fault calling facade web service method &1 on port &2 ?

  The SAP error message /IWPGW/PGW_SERVICE402 Application fault calling facade web service method &1 on port &2 typically indicates that there is an issue with a web service call in the SAP system, specifically when trying to access a facade web service. This error can arise from various causes, and here are some common reasons along with potential solutions:
  Causes:
  
  
  Service Configuration Issues: The web service may not be properly configured in the SAP system. This includes incorrect endpoint URLs, missing service definitions, or misconfigured ports.
  
  
  Network Issues: There may be network connectivity problems between the SAP system and the web service provider, such as firewalls blocking the request or DNS resolution issues.
  
  
  Authentication/Authorization Failures: The user credentials or tokens used to access the web service may be invalid or insufficient for the requested operation.
  
  
  Faulty Web Service Implementation: The web service itself may have bugs or issues that cause it to fail when called from SAP.
  
  
  Data Issues: The data being sent to the web service may not meet the expected format or validation rules, leading to a fault.
  
  
  Timeouts: The web service call may be timing out due to long processing times or unresponsive services.
  
  
  Solutions:
  
  
  Check Service Configuration:
  
  Verify the configuration of the web service in the SAP system. Ensure that the endpoint URL and port are correct.
  Check the service definition in transaction SOAMANAGER to ensure it is properly set up.
  
  
  
  Network Troubleshooting:
  
  Test the network connectivity to the web service endpoint using tools like ping or telnet.
  Check firewall settings to ensure that the necessary ports are open.
  
  
  
  Review Authentication/Authorization:
  
  Ensure that the credentials used for the web service call are correct and have the necessary permissions.
  If using OAuth or other token-based authentication, verify that the tokens are valid and not expired.
  
  
  
  Debug the Web Service:
  
  If you have access to the web service implementation, check the logs for any errors or exceptions that may indicate what went wrong.
  If possible, test the web service independently (e.g., using Postman or SOAP UI) to see if it responds correctly.
  
  
  
  Validate Input Data:
  
  Review the data being sent to the web service to ensure it adheres to the expected format and validation rules.
  Check for any required fields that may be missing.
  
  
  
  Increase Timeout Settings:
  
  If timeouts are suspected, consider increasing the timeout settings for the web service call in the SAP configuration.
  
  
  
  Related Information:
  
  Transaction Codes: Use SOAMANAGER to manage web service configurations and monitor service calls.
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address known issues related to this error.
  Logs: Review the application logs (transaction SLG1) for more detailed error messages that can provide additional context.
  
  If the issue persists after trying the above solutions, it may be beneficial to engage SAP support or consult with a technical expert familiar with your specific SAP environment and the web service in question.