AlreadyNoted

The object or state already exists; treat the goal as met or pick a different target

The preimage for this hash has already been noted on-chain, so note_preimage has nothing to add. Check RequestStatusFor (or legacy StatusFor) for the hash before submitting the bytes again.

Declared by the Preimage pallet; it classifies to the semantic code already_exists.

Remediation

The object or state already exists; treat the goal as met or pick a different target

The same explanation is available in the terminal: btcli explain AlreadyNoted.