RFC connection 'NONE' could not be registered in SDCCN

What causes this issue?

If SDCCN is running on a Solution Manager system, the RFC connection
'NONE' is used instead of a BACK-Destination. Adding 'NON' to the list
of RFC connections in SDCCN failed.

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?

Start transaction SDCCN and choose menu 'Goto' -> 'Settings' ->
'Task-specific'. Click on the icon behind 'RFC destinations' ->
'Settings'. Switch to change mode and press the button for adding an
entry. In the popup window, enter 'NONE' in the destination field and
provide a description. Press 'Continue' twice and save.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.