# ListDimensions


List the set of dimensions that are defined for your AWS accounts.

Requires permission to access the [ListDimensions](https://docs.aws.amazon.com/service-authorization/latest/reference/list_awsiot.html#awsiot-actions-as-permissions) action.

## Request Syntax


```
GET /dimensions?maxResults=maxResults&nextToken=nextToken HTTP/1.1
```

## URI Request Parameters


The request uses the following URI parameters.

 ** [maxResults](#API_ListDimensions_RequestSyntax) **   <a name="iot-ListDimensions-request-uri-maxResults"></a>
The maximum number of results to retrieve at one time.  
Valid Range: Minimum value of 1. Maximum value of 250.

 ** [nextToken](#API_ListDimensions_RequestSyntax) **   <a name="iot-ListDimensions-request-uri-nextToken"></a>
The token for the next set of results.

## Request Body


The request does not have a request body.

## Response Syntax


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

{
   "dimensionNames": [ "string" ],
   "nextToken": "string"
}
```

## Response Elements


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

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

 ** [dimensionNames](#API_ListDimensions_ResponseSyntax) **   <a name="iot-ListDimensions-response-dimensionNames"></a>
A list of the names of the defined dimensions. Use `DescribeDimension` to get details for a dimension.  
Type: Array of strings  
Length Constraints: Minimum length of 1. Maximum length of 128.  
Pattern: `[a-zA-Z0-9:_-]+` 

 ** [nextToken](#API_ListDimensions_ResponseSyntax) **   <a name="iot-ListDimensions-response-nextToken"></a>
A token that can be used to retrieve the next set of results, or `null` if there are no additional results.  
Type: String

## Errors


 ** InternalFailureException **   
An unexpected error has occurred.    
 ** message **   
The message for the exception.
HTTP Status Code: 500

 ** InvalidRequestException **   
The request is not valid.    
 ** message **   
The message for the exception.
HTTP Status Code: 400

 ** ThrottlingException **   
The rate exceeds the limit.    
 ** message **   
The message for the exception.
HTTP Status Code: 400

## See Also


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/iot-2015-05-28/ListDimensions) 
+  [AWS SDK for .NET V4](https://docs.aws.amazon.com/goto/DotNetSDKV4/iot-2015-05-28/ListDimensions) 
+  [AWS SDK for C\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/iot-2015-05-28/ListDimensions) 
+  [AWS SDK for Go v2](https://docs.aws.amazon.com/goto/SdkForGoV2/iot-2015-05-28/ListDimensions) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/iot-2015-05-28/ListDimensions) 
+  [AWS SDK for JavaScript V3](https://docs.aws.amazon.com/goto/SdkForJavaScriptV3/iot-2015-05-28/ListDimensions) 
+  [AWS SDK for Kotlin](https://docs.aws.amazon.com/goto/SdkForKotlin/iot-2015-05-28/ListDimensions) 
+  [AWS SDK for PHP V3](https://docs.aws.amazon.com/goto/SdkForPHPV3/iot-2015-05-28/ListDimensions) 
+  [AWS SDK for Python](https://docs.aws.amazon.com/goto/boto3/iot-2015-05-28/ListDimensions) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/iot-2015-05-28/ListDimensions)