NotNoted

The preimage cannot be unnoted because no preimage was ever noted for this hash. Check RequestStatusFor (or legacy StatusFor) for the hash to confirm what, if anything, is stored.

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

Remediation

The referenced object is not on-chain; check the identifier

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