# DescribeAppInstanceUser
<a name="API_DescribeAppInstanceUser"></a>

Returns the full details of an `AppInstanceUser`.

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

```
GET /app-instance-users/appInstanceUserArn HTTP/1.1
```

## URI Request Parameters
<a name="API_DescribeAppInstanceUser_RequestParameters"></a>

The request uses the following URI parameters.

 ** [appInstanceUserArn](#API_DescribeAppInstanceUser_RequestSyntax) **   <a name="chimesdk-DescribeAppInstanceUser-request-uri-AppInstanceUserArn"></a>
The ARN of the `AppInstanceUser`.  
Length Constraints: Minimum length of 5. Maximum length of 1600.  
Pattern: `arn:[a-z0-9-\.]{1,63}:[a-z0-9-\.]{0,63}:[a-z0-9-\.]{0,63}:[a-z0-9-\.]{0,63}:[^/].{0,1023}`   
Required: Yes

## Request Body
<a name="API_DescribeAppInstanceUser_RequestBody"></a>

The request does not have a request body.

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

```
HTTP/1.1 200
Content-type: application/json

{
   "AppInstanceUser": { 
      "AppInstanceUserArn": "string",
      "CreatedTimestamp": number,
      "ExpirationSettings": { 
         "ExpirationCriterion": "string",
         "ExpirationDays": number
      },
      "LastUpdatedTimestamp": number,
      "Metadata": "string",
      "Name": "string"
   }
}
```

## Response Elements
<a name="API_DescribeAppInstanceUser_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.

 ** [AppInstanceUser](#API_DescribeAppInstanceUser_ResponseSyntax) **   <a name="chimesdk-DescribeAppInstanceUser-response-AppInstanceUser"></a>
The name of the `AppInstanceUser`.  
Type: [AppInstanceUser](API_AppInstanceUser.md) object

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

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

 ** BadRequestException **   
The input parameters don't match the service's restrictions.  
HTTP Status Code: 400

 ** ForbiddenException **   
The client is permanently forbidden from making the request.  
HTTP Status Code: 403

 ** ServiceFailureException **   
The service encountered an unexpected error.  
HTTP Status Code: 500

 ** ServiceUnavailableException **   
The service is currently unavailable.  
HTTP Status Code: 503

 ** ThrottledClientException **   
The client exceeded its request rate limit.  
HTTP Status Code: 429

 ** UnauthorizedClientException **   
The client is not currently authorized to make the request.  
HTTP Status Code: 401

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

For more information about using this API in one of the language-specific AWS SDKs, see the following:
+  [AWS Command Line Interface V2](https://docs.aws.amazon.com/goto/cli2/chime-sdk-identity-2021-04-20/DescribeAppInstanceUser) 
+  [AWS SDK for .NET V4](https://docs.aws.amazon.com/goto/DotNetSDKV4/chime-sdk-identity-2021-04-20/DescribeAppInstanceUser) 
+  [AWS SDK for C\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/chime-sdk-identity-2021-04-20/DescribeAppInstanceUser) 
+  [AWS SDK for Go v2](https://docs.aws.amazon.com/goto/SdkForGoV2/chime-sdk-identity-2021-04-20/DescribeAppInstanceUser) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/chime-sdk-identity-2021-04-20/DescribeAppInstanceUser) 
+  [AWS SDK for JavaScript V3](https://docs.aws.amazon.com/goto/SdkForJavaScriptV3/chime-sdk-identity-2021-04-20/DescribeAppInstanceUser) 
+  [AWS SDK for Kotlin](https://docs.aws.amazon.com/goto/SdkForKotlin/chime-sdk-identity-2021-04-20/DescribeAppInstanceUser) 
+  [AWS SDK for PHP V3](https://docs.aws.amazon.com/goto/SdkForPHPV3/chime-sdk-identity-2021-04-20/DescribeAppInstanceUser) 
+  [AWS SDK for Python](https://docs.aws.amazon.com/goto/boto3/chime-sdk-identity-2021-04-20/DescribeAppInstanceUser) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/chime-sdk-identity-2021-04-20/DescribeAppInstanceUser)