TMS configuration: Controller unknown

What causes this issue?

An error occurred when reading the local TMS configuration. The
controller does not appear in the system list.

System Response

The function terminates.

How to fix this error?

Use transaction STMS to check the status of the configuration.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.