Comment 1 for bug 1860773

John Lenton notes that: "there's a store-side component to that because the error from the store doesn't let [snapd] tell the user the right thing. The quick fix would be to make snapd not tell the user the channel it was looking for, the better fix would be to make the channel mapper default-track-aware and pass in the default track from the error response (that's the bit that's missing)".