No destinations defined in table RFCDES for SAP systems

What causes this issue?

There is no logical destination entry for SAP systems in the table
RFCDES. This means that a REMOTE access is not currently possible for
these SAP systems.

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?

Maintain the table RFCDES with the transaction SM59.

Error message extract from SAP system. Copyright SAP SE.