# ListComponentVersions
<a name="API_ListComponentVersions"></a>

Retrieves a paginated list of all versions for a component. Greater versions are listed first.

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

```
GET /greengrass/v2/components/arn/versions?maxResults=maxResults&nextToken=nextToken HTTP/1.1
```

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

The request uses the following URI parameters.

 ** [arn](#API_ListComponentVersions_RequestSyntax) **   <a name="greengrassv2-ListComponentVersions-request-uri-arn"></a>
The [ARN](https://docs.aws.amazon.com/general/latest/gr/aws-arns-and-namespaces.html) of the component.  
Pattern: `arn:[^:]*:greengrass:[^:]*:(aws|[0-9]+):components:[^:]+`   
Required: Yes

 ** [maxResults](#API_ListComponentVersions_RequestSyntax) **   <a name="greengrassv2-ListComponentVersions-request-uri-maxResults"></a>
The maximum number of results to be returned per paginated request.  
Valid Range: Minimum value of 1. Maximum value of 100.

 ** [nextToken](#API_ListComponentVersions_RequestSyntax) **   <a name="greengrassv2-ListComponentVersions-request-uri-nextToken"></a>
The token to be used for the next set of paginated results.

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

The request does not have a request body.

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

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

{
   "componentVersions": [ 
      { 
         "arn": "string",
         "componentName": "string",
         "componentVersion": "string"
      }
   ],
   "nextToken": "string"
}
```

## Response Elements
<a name="API_ListComponentVersions_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.

 ** [componentVersions](#API_ListComponentVersions_ResponseSyntax) **   <a name="greengrassv2-ListComponentVersions-response-componentVersions"></a>
A list of versions that exist for the component.  
Type: Array of [ComponentVersionListItem](API_ComponentVersionListItem.md) objects

 ** [nextToken](#API_ListComponentVersions_ResponseSyntax) **   <a name="greengrassv2-ListComponentVersions-response-nextToken"></a>
The token for the next set of results, or null if there are no additional results.  
Type: String

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

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

 ** AccessDeniedException **   
You don't have permission to perform the action.  
HTTP Status Code: 403

 ** InternalServerException **   
 AWS IoT Greengrass can't process your request right now. Try again later.    
 ** retryAfterSeconds **   
The amount of time to wait before you retry the request.
HTTP Status Code: 500

 ** ResourceNotFoundException **   
The requested resource can't be found.    
 ** resourceId **   
The ID of the resource that isn't found.  
 ** resourceType **   
The type of the resource that isn't found.
HTTP Status Code: 404

 ** ThrottlingException **   
Your request exceeded a request rate quota. For example, you might have exceeded the amount of times that you can retrieve device or deployment status per second.    
 ** quotaCode **   
The code for the quota in [Service Quotas](https://docs.aws.amazon.com/servicequotas/latest/userguide/intro.html).  
 ** retryAfterSeconds **   
The amount of time to wait before you retry the request.  
 ** serviceCode **   
The code for the service in [Service Quotas](https://docs.aws.amazon.com/servicequotas/latest/userguide/intro.html).
HTTP Status Code: 429

 ** ValidationException **   
The request isn't valid. This can occur if your request contains malformed JSON or unsupported characters.    
 ** fields **   
The list of fields that failed to validate.  
 ** reason **   
The reason for the validation exception.
HTTP Status Code: 400

## See Also
<a name="API_ListComponentVersions_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/greengrassv2-2020-11-30/ListComponentVersions) 
+  [AWS SDK for .NET V4](https://docs.aws.amazon.com/goto/DotNetSDKV4/greengrassv2-2020-11-30/ListComponentVersions) 
+  [AWS SDK for C\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/greengrassv2-2020-11-30/ListComponentVersions) 
+  [AWS SDK for Go v2](https://docs.aws.amazon.com/goto/SdkForGoV2/greengrassv2-2020-11-30/ListComponentVersions) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/greengrassv2-2020-11-30/ListComponentVersions) 
+  [AWS SDK for JavaScript V3](https://docs.aws.amazon.com/goto/SdkForJavaScriptV3/greengrassv2-2020-11-30/ListComponentVersions) 
+  [AWS SDK for Kotlin](https://docs.aws.amazon.com/goto/SdkForKotlin/greengrassv2-2020-11-30/ListComponentVersions) 
+  [AWS SDK for PHP V3](https://docs.aws.amazon.com/goto/SdkForPHPV3/greengrassv2-2020-11-30/ListComponentVersions) 
+  [AWS SDK for Python](https://docs.aws.amazon.com/goto/boto3/greengrassv2-2020-11-30/ListComponentVersions) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/greengrassv2-2020-11-30/ListComponentVersions)