Circle V2 API Docs
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    EXTEND_DETECTION_UNAVAILABLE_MESSAGE: "We couldn't finish detecting fields on this template. This is a problem on our side, not with your file — please try again in a few minutes."

    Every way this rung fails is infrastructure, none of it fixed by editing the PDF, so the copy must name us as the cause: a failure of ours dressed as a verdict on the document sends someone hunting for a problem in a file that is fine.