pub const MODEL_UNAVAILABLE: &str = "model_unavailable";Expand description
The provider does not serve the model (HTTP 404). Permanent. As an
admission refusal, detail.model names the model; the call’s first
provider call met it, so the whole call is refused and nothing is
written. As a per-item error: it stopped the call, and every item the
call left unanswered carries it. Never stored, so a re-send after a
catalog fix asks the provider again.