# DescribeAttachment
<a name="API_DescribeAttachment"></a>

Returns the attachment that has the specified ID. Attachments can include screenshots, error logs, or other files that describe your issue. Attachment IDs are generated by the case management system when you add an attachment to a case or case communication. Attachment IDs are returned in the [AttachmentDetails](API_AttachmentDetails.md) objects that are returned by the [DescribeCommunications](API_DescribeCommunications.md) operation.

**Note**  
You must have a Business, Enterprise On-Ramp, or Enterprise Support plan to use the Amazon Web Services Support API. 
If you call the Amazon Web Services Support API from an account that doesn't have a Business, Enterprise On-Ramp, or Enterprise Support plan, the `SubscriptionRequiredException` error message appears. For information about changing your support plan, see [Amazon Web Services Support](http://www.amazonaws.cn/premiumsupport/).

## Request Syntax
<a name="API_DescribeAttachment_RequestSyntax"></a>

```
{
   "attachmentId": "{{string}}"
}
```

## Request Parameters
<a name="API_DescribeAttachment_RequestParameters"></a>

For information about the parameters that are common to all actions, see [Common Parameters](CommonParameters.md).

The request accepts the following data in JSON format.

 ** [attachmentId](#API_DescribeAttachment_RequestSyntax) **   <a name="AWSSupport-DescribeAttachment-request-attachmentId"></a>
The ID of the attachment to return. Attachment IDs are returned by the [DescribeCommunications](API_DescribeCommunications.md) operation.  
Type: String

## Response Syntax
<a name="API_DescribeAttachment_ResponseSyntax"></a>

```
{
   "attachment": { 
      "data": blob,
      "fileName": "string"
   }
}
```

## Response Elements
<a name="API_DescribeAttachment_ResponseElements"></a>

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

The following data is returned in JSON format by the service.

 ** [attachment](#API_DescribeAttachment_ResponseSyntax) **   <a name="AWSSupport-DescribeAttachment-response-attachment"></a>
This object includes the attachment content and file name.  
In the previous response syntax, the value for the `data` parameter appears as `blob`, which is represented as a base64-encoded string. The value for `fileName` is the name of the attachment, such as `troubleshoot-screenshot.png`.  
Type: [Attachment](API_Attachment.md) object

## Errors
<a name="API_DescribeAttachment_Errors"></a>

For information about the errors that are common to all actions, see [Common Error Types](CommonErrors.md).

 ** AttachmentIdNotFound **   
An attachment with the specified ID could not be found.    
 ** message **   
An attachment with the specified ID could not be found.
HTTP Status Code: 400

 ** DescribeAttachmentLimitExceeded **   
The limit for the number of [DescribeAttachment](#API_DescribeAttachment) requests in a short period of time has been exceeded.    
 ** message **   
The limit for the number of [DescribeAttachment](#API_DescribeAttachment) requests in a short period of time has been exceeded.
HTTP Status Code: 400

 ** InternalServerError **   
An internal server error occurred.    
 ** message **   
An internal server error occurred.
HTTP Status Code: 500

## See Also
<a name="API_DescribeAttachment_SeeAlso"></a>

For more information about using this API in one of the language-specific Amazon SDKs, see the following:
+  [Amazon Command Line Interface V2](https://docs.amazonaws.cn/goto/cli2/support-2013-04-15/DescribeAttachment) 
+  [Amazon SDK for .NET V4](https://docs.amazonaws.cn/goto/DotNetSDKV4/support-2013-04-15/DescribeAttachment) 
+  [Amazon SDK for C\+\+](https://docs.amazonaws.cn/goto/SdkForCpp/support-2013-04-15/DescribeAttachment) 
+  [Amazon SDK for Go v2](https://docs.amazonaws.cn/goto/SdkForGoV2/support-2013-04-15/DescribeAttachment) 
+  [Amazon SDK for Java V2](https://docs.amazonaws.cn/goto/SdkForJavaV2/support-2013-04-15/DescribeAttachment) 
+  [Amazon SDK for JavaScript V3](https://docs.amazonaws.cn/goto/SdkForJavaScriptV3/support-2013-04-15/DescribeAttachment) 
+  [Amazon SDK for Kotlin](https://docs.amazonaws.cn/goto/SdkForKotlin/support-2013-04-15/DescribeAttachment) 
+  [Amazon SDK for PHP V3](https://docs.amazonaws.cn/goto/SdkForPHPV3/support-2013-04-15/DescribeAttachment) 
+  [Amazon SDK for Python](https://docs.amazonaws.cn/goto/boto3/support-2013-04-15/DescribeAttachment) 
+  [Amazon SDK for Ruby V3](https://docs.amazonaws.cn/goto/SdkForRubyV3/support-2013-04-15/DescribeAttachment)