BatchInterrupted

Event v120 → current #0

Emitted when a batch did not complete fully - gives index of first failing call .

View events on chain

Useful for: developersanalyticswallets

The Big Picture

When batching multiple calls, this event tells you where things went wrong.

Use Cases

Debug which call in a batch failed

From Chain Metadata

Batch of dispatches did not complete fully. Index of first failing dispatch given, as well as the error.

Triggers

Emitted by

batch batch_all

Preconditions

batch or batch_all call executed
At least one inner call failed

Effects

Postconditions

Calls up to (but not including) index executed

Side Effects

Contains error details for debugging

Event Data

#	Name	Type	Description
0	index	u32	Index of the first failing call in the batch
1	error	DispatchError	Error that caused the batch to be interrupted

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 BatchInterrupted events
api.query.system.events((events) => {
  events
    .filter(({ event }) =>
      event.section === stringCamelCase("Utility") &&
      event.method === "BatchInterrupted"
    )
    .forEach(({ event }) => {
      console.log("BatchInterrupted:", event.data.toHuman());
    });
});

On-Chain Activity

Emission Frequency

●●●○○○ Active 100K–1M emissions

Regular feature-level activity

#40 most emitted event

As of block 7,429,232

Runtime Info

Pallet Index: 11
Event Index: 0
First Version: v120
Current Version: v393

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