Lists all the roots, organizational units (OUs), and accounts that the
specified policy is attached to.
Always check the NextToken response parameter for a null value when
calling a List* operation. These operations can occasionally return an
empty set of results even when there are more results available. The
NextToken response parameter value is null only when there are no
more results to display.
This operation can be called only from the organization's management
account or by a member account that is a delegated administrator for an
AWS service.