No suitable ICM service active (ICM_HTTP_NO_ICM_SERVICE)

What causes this issue?

An outgoing connection was attempted, without having the ICM service
configured.

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?

Even for outgoing connections it is necessary that you configure an ICM
service. If you do not want incoming connections to be allowed,
configure port number 0.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.