# Rules for choosing buckets for Amazon S3 Multi-Region Access Points
<a name="multi-region-access-point-buckets"></a>

Each Multi-Region Access Point is associated with the Regions where you want to fulfill requests. The Multi-Region Access Point must be associated with exactly one bucket in each of those Regions. You specify the name of each bucket in the request to create the Multi-Region Access Point. Buckets that support the Multi-Region Access Point can either be in the same AWS account that owns the Multi-Region Access Point, or they can be in other AWS accounts.

 A single bucket can be used by multiple Multi-Region Access Points. 

**Important**  
You can specify the buckets that are associated with a Multi-Region Access Point only at the time that you create it. After it is created, you can’t add, modify, or remove buckets from the Multi-Region Access Point configuration. To change the buckets, you must delete the entire Multi-Region Access Point and create a new one. 
You can't delete a bucket that is part of a Multi-Region Access Point. If you want to delete a bucket that's attached to a Multi-Region Access Point, delete the Multi-Region Access Point first. 
If you add a bucket that's owned by another account to your Multi-Region Access Point, the bucket owner must also update their bucket policy to grant access permissions to the Multi-Region Access Point. Otherwise, the Multi-Region Access Point won't be able to retrieve data from that bucket. For example policies that show how to grant such access, see [Multi-Region Access Point policy examples](https://docs.aws.amazon.com/AmazonS3/latest/userguide/MultiRegionAccessPointPermissions.html#MultiRegionAccessPointPolicyExamples). 
 Not all Regions support Multi-Region Access Points. To see the list of supported Regions, see [Multi-Region Access Point restrictions and limitations](MultiRegionAccessPointRestrictions.md). 

You can create replication rules to synchronize data between buckets. These rules enable you to automatically copy data from source buckets to destination buckets. Having buckets connected to a Multi-Region Access Point does not affect how replication works. Configuring replication with Multi-Region Access Points is described in a later section.

**Important**  
When you make a request to a Multi-Region Access Point, the Multi-Region Access Point isn't aware of the data contents of the buckets in the Multi-Region Access Point. Therefore, the bucket that gets the request might not contain the requested data. To create consistent datasets in the Amazon S3 buckets that are associated with a Multi-Region Access Point, we recommend that you configure S3 Cross-Region Replication (CRR). For more information, see [Configuring replication for use with Multi-Region Access Points](MultiRegionAccessPointBucketReplication.md).