# UpdateMulticastGroup
<a name="API_UpdateMulticastGroup"></a>

Updates properties of a multicast group session.

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

```
PATCH /multicast-groups/Id HTTP/1.1
Content-type: application/json

{
   "Description": "string",
   "LoRaWAN": { 
      "DlClass": "string",
      "ParticipatingGateways": { 
         "GatewayList": [ "string" ],
         "TransmissionInterval": number
      },
      "RfRegion": "string"
   },
   "Name": "string"
}
```

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

The request uses the following URI parameters.

 ** [Id](#API_UpdateMulticastGroup_RequestSyntax) **   <a name="iotwireless-UpdateMulticastGroup-request-uri-Id"></a>
The ID of the multicast group.  
Length Constraints: Maximum length of 256.  
Required: Yes

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

The request accepts the following data in JSON format.

 ** [Description](#API_UpdateMulticastGroup_RequestSyntax) **   <a name="iotwireless-UpdateMulticastGroup-request-Description"></a>
The description of the new resource.  
Type: String  
Length Constraints: Maximum length of 2048.  
Required: No

 ** [LoRaWAN](#API_UpdateMulticastGroup_RequestSyntax) **   <a name="iotwireless-UpdateMulticastGroup-request-LoRaWAN"></a>
The LoRaWAN information that is to be used with the multicast group.  
Type: [LoRaWANMulticast](API_LoRaWANMulticast.md) object  
Required: No

 ** [Name](#API_UpdateMulticastGroup_RequestSyntax) **   <a name="iotwireless-UpdateMulticastGroup-request-Name"></a>
The name of the multicast group.  
Type: String  
Length Constraints: Maximum length of 256.  
Required: No

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

```
HTTP/1.1 204
```

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

If the action is successful, the service sends back an HTTP 204 response with an empty HTTP body.

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

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

 ** AccessDeniedException **   
User does not have permission to perform this action.  
HTTP Status Code: 403

 ** ConflictException **   
Adding, updating, or deleting the resource can cause an inconsistent state.    
 ** ResourceId **   
Id of the resource in the conflicting operation.  
 ** ResourceType **   
Type of the resource in the conflicting operation.
HTTP Status Code: 409

 ** InternalServerException **   
An unexpected error occurred while processing a request.  
HTTP Status Code: 500

 ** ResourceNotFoundException **   
Resource does not exist.    
 ** ResourceId **   
Id of the not found resource.  
 ** ResourceType **   
Type of the font found resource.
HTTP Status Code: 404

 ** ThrottlingException **   
The request was denied because it exceeded the allowed API request rate.  
HTTP Status Code: 429

 ** ValidationException **   
The input did not meet the specified constraints.  
HTTP Status Code: 400

## See Also
<a name="API_UpdateMulticastGroup_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/iotwireless-2025-11-06/UpdateMulticastGroup) 
+  [AWS SDK for .NET V4](https://docs.aws.amazon.com/goto/DotNetSDKV4/iotwireless-2025-11-06/UpdateMulticastGroup) 
+  [AWS SDK for C\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/iotwireless-2025-11-06/UpdateMulticastGroup) 
+  [AWS SDK for Go v2](https://docs.aws.amazon.com/goto/SdkForGoV2/iotwireless-2025-11-06/UpdateMulticastGroup) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/iotwireless-2025-11-06/UpdateMulticastGroup) 
+  [AWS SDK for JavaScript V3](https://docs.aws.amazon.com/goto/SdkForJavaScriptV3/iotwireless-2025-11-06/UpdateMulticastGroup) 
+  [AWS SDK for Kotlin](https://docs.aws.amazon.com/goto/SdkForKotlin/iotwireless-2025-11-06/UpdateMulticastGroup) 
+  [AWS SDK for PHP V3](https://docs.aws.amazon.com/goto/SdkForPHPV3/iotwireless-2025-11-06/UpdateMulticastGroup) 
+  [AWS SDK for Python](https://docs.aws.amazon.com/goto/boto3/iotwireless-2025-11-06/UpdateMulticastGroup) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/iotwireless-2025-11-06/UpdateMulticastGroup)