bgRFC Supervisor: User &1 does not have sufficient authorization

What causes this issue?

The user entered in the supervisor destination does not have
authorization to execute the function group BGRFC_SUPERVISOR.

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?

In transaction SM59, enter a user that has this authorization.
Assign this authorization to the user entered in the specified
destination. You can use the authorization role SAP_BC_BGRFC_SUPERVISOR
to do this.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.