RejectedInvalidAuthorizedUpgrade

Event v301 → current #7

Emitted when an authorized upgrade fails validation during application.

Useful for: validatorsdevelopersanalytics

The Big Picture

When someone tries to apply an authorized upgrade but the code fails checks, this event explains why. The error field contains the specific validation failure. The authorization isn't cleared, so a corrected version can still be applied.

Use Cases

Debug failed upgrade attempts
Alert on upgrade failures
Monitor chain health during upgrades

From Chain Metadata

An invalid authorized upgrade was rejected while trying to apply it.

Triggers

Emitted by

apply_authorized_upgrade

Preconditions

Upgrade was previously authorized
apply_authorized_upgrade was called
Code failed validation (wrong spec name, version didn't increase, etc.)

Effects

Storage Modified

AuthorizedUpgrade LastRuntimeUpgrade

Postconditions

Upgrade was NOT applied
Authorization remains (can retry with correct code)

Side Effects

Runtime remains on current version

Event Data

#	Name	Type	Description
0	code_hash	H256	Blake2-256 hash of the rejected code
1	error	DispatchError	The validation error that caused rejection

Code Examples

import { ApiPromise, WsProvider } from "@polkadot/api";
import { stringCamelCase } from "@polkadot/util";

const provider = new WsProvider("wss://entrypoint-finney.opentensor.ai:443");
const api = await ApiPromise.create({ provider });

// Subscribe to RejectedInvalidAuthorizedUpgrade events
api.query.system.events((events) => {
  events
    .filter(({ event }) =>
      event.section === stringCamelCase("System") &&
      event.method === "RejectedInvalidAuthorizedUpgrade"
    )
    .forEach(({ event }) => {
      console.log("RejectedInvalidAuthorizedUpgrade:", event.data.toHuman());
    });
});

Runtime Info

Pallet Index: 0
Event Index: 7
First Version: v301
Current Version: v393

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