PutBucketPolicy - Amazon Simple Storage Service



This action puts a bucket policy to an Amazon S3 on Outposts bucket. To put a policy on an S3 bucket, see PutBucketPolicy in the Amazon S3 API Reference.

Applies an Amazon S3 bucket policy to an Outposts bucket. For more information, see Using Amazon S3 on Outposts in the Amazon S3 User Guide.

If you are using an identity other than the root user of the AWS account that owns the Outposts bucket, the calling identity must have the PutBucketPolicy permissions on the specified Outposts bucket and belong to the bucket owner's account in order to use this action.

If you don't have PutBucketPolicy permissions, Amazon S3 returns a 403 Access Denied error. If you have the correct permissions, but you're not using an identity that belongs to the bucket owner's account, Amazon S3 returns a 405 Method Not Allowed error.


As a security precaution, the root user of the AWS account that owns a bucket can always use this action, even if the policy explicitly denies the root user the ability to perform this action.

For more information about bucket policies, see Using Bucket Policies and User Policies.

All Amazon S3 on Outposts REST API requests for this action require an additional parameter of x-amz-outpost-id to be passed with the request. In addition, you must use an S3 on Outposts endpoint hostname prefix instead of s3-control. For an example of the request syntax for Amazon S3 on Outposts that uses the S3 on Outposts endpoint hostname prefix and the x-amz-outpost-id derived by using the access point ARN, see the Examples section.

The following actions are related to PutBucketPolicy:

Request Syntax

PUT /v20180820/bucket/name/policy HTTP/1.1 Host: Bucket.s3-control.amazonaws.com x-amz-account-id: AccountId x-amz-confirm-remove-self-bucket-access: ConfirmRemoveSelfBucketAccess <?xml version="1.0" encoding="UTF-8"?> <PutBucketPolicyRequest xmlns="http://awss3control.amazonaws.com/doc/2018-08-20/"> <Policy>string</Policy> </PutBucketPolicyRequest>

URI Request Parameters

The request uses the following URI parameters.


Specifies the bucket.

For using this parameter with Amazon S3 on Outposts with the REST API, you must specify the name and the x-amz-outpost-id as well.

For using this parameter with S3 on Outposts with the AWS SDK and CLI, you must specify the ARN of the bucket accessed in the format arn:aws:s3-outposts:<Region>:<account-id>:outpost/<outpost-id>/bucket/<my-bucket-name>. For example, to access the bucket reports through Outpost my-outpost owned by account 123456789012 in Region us-west-2, use the URL encoding of arn:aws:s3-outposts:us-west-2:123456789012:outpost/my-outpost/bucket/reports. The value must be URL encoded.

Length Constraints: Minimum length of 3. Maximum length of 255.

Required: Yes


The AWS account ID of the Outposts bucket.

Length Constraints: Maximum length of 64.

Pattern: ^\d{12}$

Required: Yes


Set this parameter to true to confirm that you want to remove your permissions to change this bucket policy in the future.


This is not supported by Amazon S3 on Outposts buckets.

Request Body

The request accepts the following data in XML format.


Root level tag for the PutBucketPolicyRequest parameters.

Required: Yes


The bucket policy as a JSON document.

Type: String

Required: Yes

Response Syntax

HTTP/1.1 200

Response Elements

If the action is successful, the service sends back an HTTP 200 response with an empty HTTP body.


Sample request for putting a bucket policy in an Amazon S3 on Outposts bucket

The following request shows the PUT an individual policy request for the Outposts bucket example-outpost-bucket.

PUT v20180820/bucket/example-outpost-bucket/policy HTTP/1.1 Host: s3-outposts.<Region>.amazonaws.com Date: Tue, 04 Apr 2010 20:34:56 GMT Authorization: authorization string x-amz-account-id: example-account-id x-amz-outpost-id: op-01ac5d28a6a232904 { "Version":"2012-10-17", "Id":"exampleS3OnOutpostBucketPolicy", "Statement":[ { "Sid":"st1", "Effect":"Allow", "Principal":{ "AWS":"example-account-id" }, "Action":"s3-outposts:*", "Resource":"arn:aws:s3-outposts:<your-region>:example-account-id:outpost/op-01ac5d28a6a232904/bucket/example-outpost-bucket" } ] }

See Also

For more information about using this API in one of the language-specific AWS SDKs, see the following: