# CfnResourcePolicyProps

Properties for defining a `CfnResourcePolicy`.

Extends: CfnResourcePolicyProps
Used as props by: CfnResourcePolicy

- Source: Generated code
- Type last changed: v2.272.0 · 30 Sep 2026

## Example

```ts
// The code below shows an example of how to instantiate this type.
// The values are placeholders you should change.
import { aws_eventsv2 as eventsv2 } from 'aws-cdk-lib';

declare const policyDocument: any;
const cfnResourcePolicyProps: eventsv2.CfnResourcePolicyProps = {
  eventBusArn: 'eventBusArn',
  policyDocument: policyDocument,
};
```

## Properties

- `eventBusArn`: string (required) — The Amazon Resource Name (ARN) of the event bus whose resource policy this is.

  The bus must already exist. This resource does not create it.

- `policyDocument`: any (required) — The resource policy document, as a JSON object.

  The document can be up to 20 KB. This quota is adjustable. An empty object is not a valid policy. To remove the policy, delete this resource. The principals in the document must exist and be visible to the service when the policy is written. When you create a new IAM role or user, that principal might not be immediately visible to the service. You might need to enforce a delay before you include it in the document. For more information, see "Changes that I make are not always immediately visible" in the IAM User Guide. Declare Version. Write AWS account and role principals as ARNs rather than as account IDs. Write a single Action, Resource, or principal value as a scalar rather than as a one-element list. The service returns these forms as you wrote them. It normalizes other forms, and a normalized value can appear as drift. A stack update replaces the whole policy with this document, including any change made outside CloudFormation. For more information about event bus resource policies, see the Amazon EventBridge User Guide.