# EventSourceMappingProperty

- Source: Generated code
- Type last changed: v2.257.0 · 21 May 2026

## Example

```ts
// The code below shows an example of how to instantiate this type.
// The values are placeholders you should change.
import { aws_arcregionswitch as arcregionswitch } from 'aws-cdk-lib';
const eventSourceMappingProperty: arcregionswitch.CfnPlan.EventSourceMappingProperty = {
  arn: 'arn',

  // the properties below are optional
  crossAccountRole: 'crossAccountRole',
  externalId: 'externalId',
};
```

## Properties

- `arn`: string (required)

- `crossAccountRole`: string

- `externalId`: string