How To Fix SCLNT_HTTP407 - SSL error (ICM_HTTP_SSL_ERROR)

SAP Error Message - Details

• Message type: E = Error

• Message class: SCLNT_HTTP - Messages for HTTP Client for Respective Error Code

• Message number: 407

• Message text: SSL error (ICM_HTTP_SSL_ERROR)

What causes this issue?

An error occurred while setting up the SSL connection.

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 that the client and server certificates are valid. Check that the
client is known to the server certificate. If a client certificate is
used, check that the server is known to it.

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 SCLNT_HTTP407 - SSL error (ICM_HTTP_SSL_ERROR) ?

  The SAP error message SCLNT_HTTP407 SSL error (ICM_HTTP_SSL_ERROR) typically indicates an issue with SSL (Secure Sockets Layer) communication between the SAP system and a client or server. This error can arise due to various reasons, including misconfiguration of SSL settings, certificate issues, or network problems.
  Causes of the Error
  
  
  SSL Certificate Issues:
  
  The SSL certificate may be expired, invalid, or not trusted by the client or server.
  The certificate chain may be incomplete, leading to trust issues.
  
  
  
  Configuration Problems:
  
  Incorrect SSL configuration in the SAP system or the web server.
  Missing or incorrect SSL parameters in the instance profile.
  
  
  
  Network Issues:
  
  Firewall or proxy settings may be blocking SSL traffic.
  Network connectivity issues between the SAP system and the client/server.
  
  
  
  Client Authentication:
  
  The server may require client authentication, and the client may not be providing a valid certificate.
  
  
  
  Protocol Mismatch:
  
  The client and server may not support the same SSL/TLS protocols or cipher suites.
  
  
  
  Solutions
  
  
  Check SSL Certificates:
  
  Verify that the SSL certificate is valid and not expired.
  Ensure that the certificate is trusted by the SAP system. You may need to import the root and intermediate certificates into the SAP trust store.
  
  
  
  Review SSL Configuration:
  
  Check the SSL configuration in the SAP system (transaction STRUST for managing SSL certificates).
  Ensure that the SSL parameters in the instance profile are correctly set (e.g., icm/HTTPS/verify_client, icm/HTTPS/verify_server).
  
  
  
  Network Configuration:
  
  Ensure that there are no firewalls or proxies blocking SSL traffic.
  Test network connectivity to the target server using tools like ping or telnet.
  
  
  
  Client Authentication:
  
  If client authentication is required, ensure that the client is configured to present a valid certificate.
  Check the server's configuration to see if it requires client certificates.
  
  
  
  Protocol and Cipher Suite Compatibility:
  
  Ensure that both the client and server support compatible SSL/TLS protocols and cipher suites.
  Update the configuration to enable the necessary protocols if needed.
  
  
  
  Related Information
  
  SAP Notes: Check for relevant SAP Notes that may address specific issues related to SSL errors. You can search the SAP Support Portal for notes related to ICM_HTTP_SSL_ERROR.
  Logs and Traces: Review the ICM (Internet Communication Manager) logs for more detailed error messages. You can find these logs in the transaction SMICM.
  SAP Community: Engage with the SAP Community forums for discussions and solutions related to SSL errors.
  Documentation: Refer to the official SAP documentation for SSL configuration and troubleshooting.
  
  By following these steps, you should be able to diagnose and resolve the SCLNT_HTTP407 SSL error (ICM_HTTP_SSL_ERROR) in your SAP environment.