# Troubleshoot storage settings for AWS IoT SiteWise
<a name="troubleshoot-storage-configuration"></a>

Use the following information to troubleshoot and resolve issues with the storage configuration.

**Topics**
+ [Error: Bucket doesn't exist](#no-s3-bucket)
+ [Error: Access denied to Amazon S3 path](#iam-permissions)
+ [Error: Role ARN can't be assumed](#iam-trust-relationship)
+ [Error: Failed to access cross-Region Amazon S3 bucket](#cross-region-s3-bucket)

## Error: Bucket doesn't exist
<a name="no-s3-bucket"></a>

**Solution:** AWS IoT SiteWise couldn't find your Amazon S3 bucket. Make sure you enter the name of an existing Amazon S3 bucket in the current Region.

## Error: Access denied to Amazon S3 path
<a name="iam-permissions"></a>

**Solution:** AWS IoT SiteWise couldn't access your Amazon S3 bucket. Do the following:
+ Make sure that you use the same Amazon S3 bucket that you specified in the IAM policy.
+ Make sure that your role has the permissions shown in the following example.  
**Example permissions policy**  

------
#### [ JSON ]

****  

  ```
  {
        "Version":"2012-10-17",		 	 	 
        "Statement": [
            {
                "Effect": "Allow",
                "Action": [
                    "s3:PutObject",
                    "s3:GetObject",
                    "s3:DeleteObject",
                    "s3:GetBucketLocation",
                    "s3:ListBucket"
                ],
                "Resource": [
                    "arn:aws:s3:::amzn-s3-demo-bucket",
                    "arn:aws:s3:::amzn-s3-demo-bucket/*"
                ]
            }
        ]
    }
  ```

------

  Replace amzn-s3-demo-bucket with the name of your Amazon S3 bucket.

## Error: Role ARN can't be assumed
<a name="iam-trust-relationship"></a>

**Solution:** AWS IoT SiteWise couldn't assume the IAM role on your behalf. Make sure that your role trusts the following service: `iotsitewise.amazonaws.com`. For more information, see [I can't assume a role](https://docs.aws.amazon.com/IAM/latest/UserGuide/troubleshoot_roles.html#troubleshoot_roles_cant-assume-role) see *IAM User Guide*.

## Error: Failed to access cross-Region Amazon S3 bucket
<a name="cross-region-s3-bucket"></a>

**Solution:** The Amazon S3 bucket that you specified is in a different AWS Region. Make sure that your Amazon S3 bucket and AWS IoT SiteWise assets are in the same Region.