How To Fix SRT_WSP877 - Proxy '&1' is assigned to fallback logical port '&2'

SAP Error Message - Details

• Message type: E = Error

• Message class: SRT_WSP - Messages for SRT WSP

• Message number: 877

• Message text: Proxy '&1' is assigned to fallback logical port '&2'

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SRT_WSP877 - Proxy '&1' is assigned to fallback logical port '&2' ?

  The SAP error message SRT_WSP877 indicates that a proxy service is assigned to a fallback logical port. This typically occurs in the context of SAP's web service communication, particularly when using the SAP NetWeaver Application Server.
  Cause:
  
  Fallback Logical Port: The error suggests that the system is trying to use a fallback logical port for a web service proxy. This usually happens when the primary logical port is not configured correctly or is not available.
  Configuration Issues: The logical port may not be set up properly, or the service endpoint may be unreachable due to network issues, incorrect URLs, or authentication problems.
  Proxy Assignment: The proxy service may not be correctly assigned to the intended logical port, leading the system to revert to a fallback option.
  
  Solution:
  
  
  Check Logical Port Configuration:
  
  Go to transaction SOAMANAGER in your SAP system.
  Navigate to the Web Service Configuration section.
  Check the configuration of the logical port assigned to the proxy service. Ensure that the endpoint URL is correct and reachable.
  
  
  
  Verify Proxy Assignment:
  
  Ensure that the proxy service is correctly assigned to the intended logical port. You can do this in the same SOAMANAGER transaction.
  If necessary, reassign the proxy to the correct logical port.
  
  
  
  Test Connectivity:
  
  Use tools like telnet or ping to check if the endpoint of the logical port is reachable from the SAP system.
  If there are network issues, resolve them accordingly.
  
  
  
  Fallback Logical Port:
  
  If the fallback logical port is being used, check its configuration as well. Ensure that it is set up correctly and can handle requests if the primary port fails.
  
  
  
  Check for Updates:
  
  Ensure that your SAP system is up to date with the latest patches and updates, as there may be bug fixes related to web service communication.
  
  
  
  Review Logs:
  
  Check the application logs (transaction SLG1) for any additional error messages or warnings that could provide more context about the issue.
  
  
  
  Related Information:
  
  SOAMANAGER: This is the transaction used for managing web service configurations in SAP.
  Logical Ports: These are configurations that define how SAP communicates with external web services, including endpoint URLs and authentication methods.
  Web Service Proxies: These are generated in SAP to facilitate communication with external services, and they need to be correctly configured to avoid fallback scenarios.
  
  By following these steps, you should be able to identify and resolve the issue related to the SRT_WSP877 error message. If the problem persists, consider reaching out to SAP support for further assistance.