Those notes seem to have microtonal pitches - e.g. the very first one has a MIDI pitch of 63.5 which is halfway between Eb4 and E4. The project hasn’t been defined with a tonality system that uses quartertones, and the notes don’t have accidentals that make sense with quartertones either, so Dorico doesn’t know how to work out what transpositions are available for those notes.
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