Object is used in system &1. This system cannot be accessed with RFC.

What causes this issue?

This object is used in system &V1&. This system does not belong to the
development landscape of the SAP core applications. Instead it contains
a New Dimension application. You cannot use the RFC where-used list for
this system.

System Response

The function terminates.

How to fix this error?

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

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.