Invalid host name in SSL server certificate (ICM_HTTP_SSL_CERT_MISMATCH)

What causes this issue?

The host name that is specified in the certificate of the server does
not match the name that was used for setting up the network 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 fully qualified host name, with domain, was used for the
network connection. Where possible, use the host name specified in the
server certificate, or contact the administrator of the server to import
a certificate with a valid name.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.