# LambdaEventSourceMappingConfigurationProperty

- 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 lambdaEventSourceMappingConfigurationProperty: arcregionswitch.CfnPlan.LambdaEventSourceMappingConfigurationProperty = {
  action: 'action',
  regionEventSourceMappings: {
    regionEventSourceMappingsKey: {
      arn: 'arn',

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

  // the properties below are optional
  timeoutMinutes: 123,
  ungraceful: {
    behavior: 'behavior',
  },
};
```

## Properties

- `action`: string (required)

- `regionEventSourceMappings`: [IResolvable](/cdk/api/v2/docs/aws-cdk-lib.IResolvable.html) | { [key: string]: [IResolvable](/cdk/api/v2/docs/aws-cdk-lib.IResolvable.html) | [CfnPlan.EventSourceMappingProperty](/cdk/api/v2/docs/aws-cdk-lib.aws_arcregionswitch.CfnPlan.EventSourceMappingProperty.html) } (required)

- `timeoutMinutes`: number = 60

- `ungraceful`: [IResolvable](/cdk/api/v2/docs/aws-cdk-lib.IResolvable.html) | [CfnPlan.LambdaEventSourceMappingUngracefulProperty](/cdk/api/v2/docs/aws-cdk-lib.aws_arcregionswitch.CfnPlan.LambdaEventSourceMappingUngracefulProperty.html)