Principal user is missing readIncident privilege

I am logged in as an Administrator in the default Business Unit.  I am trying to create a new Case (incident) and assign it to a Team (via a workflow, although I get this same error outside of the workflow) in a child Business Unit, but I get this error.  This is a new solution I've just started from scratch, which is a recreate of my Proof-of-Concept.

I would think as Administrator of the Default BU you should be able to do anything.  What is this telling me?