How To Fix SRT_CORE111 - HTTP communication failure

SAP Error Message - Details

• Message type: E = Error

• Message class: SRT_CORE - Nachrichtenklasse für SOAP Runtime

• Message number: 111

• Message text: HTTP communication failure

What causes this issue?

The sending of an HTTP request was aborted due to a configuration error
of the logical port (wrong target host name, wrong target port number or
wrong proxy host name, wrong proxy port number, wrong proxy user, wrong
proxy password), to a network problem or the target system or the proxy
system is temporarily not available.

System Response

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

How to fix this error?

Check the logical port configuration for accessing the target system
(target host name, target port number and also proxy host name, proxy
port, proxy user, proxy password) and also ask your network
administrators to check the network and the target system.
In case of configuration error, run transaction SOAMANAGER for a
re-configuration of the logical port to correct the target host name or
target port number.
How To Save Error Entries
If you want to save one or more error entries (displaying in detail and
not summary mode) to your computer for sending it later to your
collegues or to SAP Support, just do the following:
Mark one or more error entries you want to download
Click "Download as XML".
Confirm the pop-up for saving.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message SRT_CORE111 - HTTP communication failure ?

  The SAP error message SRT_CORE111 indicates an HTTP communication failure, which typically occurs in scenarios involving SAP's web services or when using the SAP Process Integration (PI) or Process Orchestration (PO) systems. This error can arise due to various reasons, including network issues, incorrect configurations, or problems with the web service itself.
  Causes of SRT_CORE111
  
  
  Network Issues: Problems with the network connection between the SAP system and the target service can lead to this error. This includes issues like firewalls blocking traffic, DNS resolution failures, or general connectivity problems.
  
  
  Incorrect URL: The endpoint URL for the web service might be incorrect or unreachable. This could be due to a typo or changes in the service location.
  
  
  Service Unavailability: The target web service might be down or not responding. This could be due to maintenance, server issues, or the service being disabled.
  
  
  Authentication Issues: If the web service requires authentication (e.g., Basic Auth, OAuth), and the credentials are incorrect or missing, this can lead to communication failures.
  
  
  SSL/TLS Issues: If the communication is over HTTPS, there may be issues with SSL certificates, such as expired certificates or untrusted certificate authorities.
  
  
  Timeouts: The request may be timing out due to slow responses from the target service or network latency.
  
  
  Solutions for SRT_CORE111
  
  
  Check Network Connectivity: Ensure that the SAP system can reach the target service. You can use tools like ping, traceroute, or telnet to test connectivity.
  
  
  Verify the Endpoint URL: Double-check the URL configured in the SAP system for the web service. Make sure it is correct and accessible.
  
  
  Check Service Status: Verify that the target web service is up and running. You can do this by accessing the service directly through a web browser or using tools like Postman.
  
  
  Review Authentication Settings: If the service requires authentication, ensure that the correct credentials are being used and that they are properly configured in the SAP system.
  
  
  Inspect SSL/TLS Configuration: If using HTTPS, check the SSL certificate for validity and ensure that the SAP system trusts the certificate authority that issued the service's certificate.
  
  
  Increase Timeout Settings: If timeouts are an issue, consider increasing the timeout settings in the SAP system for the HTTP connection.
  
  
  Check SAP Logs: Review the SAP application logs (transaction SLG1) for more detailed error messages that can provide additional context about the failure.
  
  
  Use SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address specific issues related to SRT_CORE111.
  
  
  Related Information
  
  Transaction Codes: You may use transaction codes like SOAMANAGER to manage web service configurations and monitor service calls.
  Web Service Monitoring: Utilize tools within SAP PI/PO for monitoring web service calls and analyzing logs for errors.
  Documentation: Refer to SAP Help documentation for detailed information on configuring web services and troubleshooting communication issues.
  
  By systematically checking these areas, you should be able to identify and resolve the cause of the SRT_CORE111 error.