StateChangeDenied

The contract invoked a state-modifying host function, such as a storage write, transfer, or value-bearing call, while executing in read-only mode. Check whether the enclosing call was made with the read-only flag or from a static context.

Declared by the Contracts pallet; it classifies to the semantic code not_authorized.

Remediation

Sign with the key or origin that owns the target object, then retry

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