# ListQueuedMessages
<a name="API_ListQueuedMessages"></a>

List queued messages in the downlink queue.

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

```
GET /wireless-devices/Id/data?maxResults=MaxResults&nextToken=NextToken&WirelessDeviceType=WirelessDeviceType HTTP/1.1
```

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

The request uses the following URI parameters.

 ** [Id](#API_ListQueuedMessages_RequestSyntax) **   <a name="iotwireless-ListQueuedMessages-request-uri-Id"></a>
The ID of a given wireless device which the downlink message packets are being sent.  
Length Constraints: Maximum length of 256.  
Required: Yes

 ** [MaxResults](#API_ListQueuedMessages_RequestSyntax) **   <a name="iotwireless-ListQueuedMessages-request-uri-MaxResults"></a>
The maximum number of results to return in this operation.  
Valid Range: Minimum value of 0. Maximum value of 250.

 ** [NextToken](#API_ListQueuedMessages_RequestSyntax) **   <a name="iotwireless-ListQueuedMessages-request-uri-NextToken"></a>
To retrieve the next set of results, the `nextToken` value from a previous response; otherwise **null** to receive the first set of results.  
Length Constraints: Maximum length of 4096.

 ** [WirelessDeviceType](#API_ListQueuedMessages_RequestSyntax) **   <a name="iotwireless-ListQueuedMessages-request-uri-WirelessDeviceType"></a>
The wireless device type, whic can be either Sidewalk or LoRaWAN.  
Valid Values: `Sidewalk | LoRaWAN` 

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

The request does not have a request body.

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

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

{
   "DownlinkQueueMessagesList": [ 
      { 
         "LoRaWAN": { 
            "FPort": number,
            "ParticipatingGateways": { 
               "DownlinkMode": "string",
               "GatewayList": [ 
                  { 
                     "DownlinkFrequency": number,
                     "GatewayId": "string"
                  }
               ],
               "TransmissionInterval": number
            }
         },
         "MessageId": "string",
         "ReceivedAt": "string",
         "TransmitMode": number
      }
   ],
   "NextToken": "string"
}
```

## Response Elements
<a name="API_ListQueuedMessages_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.

 ** [DownlinkQueueMessagesList](#API_ListQueuedMessages_ResponseSyntax) **   <a name="iotwireless-ListQueuedMessages-response-DownlinkQueueMessagesList"></a>
The messages in the downlink queue.  
Type: Array of [DownlinkQueueMessage](API_DownlinkQueueMessage.md) objects

 ** [NextToken](#API_ListQueuedMessages_ResponseSyntax) **   <a name="iotwireless-ListQueuedMessages-response-NextToken"></a>
To retrieve the next set of results, the `nextToken` value from a previous response; otherwise **null** to receive the first set of results.  
Type: String  
Length Constraints: Maximum length of 4096.

## Errors
<a name="API_ListQueuedMessages_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

 ** 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_ListQueuedMessages_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/ListQueuedMessages) 
+  [AWS SDK for .NET V4](https://docs.aws.amazon.com/goto/DotNetSDKV4/iotwireless-2025-11-06/ListQueuedMessages) 
+  [AWS SDK for C\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/iotwireless-2025-11-06/ListQueuedMessages) 
+  [AWS SDK for Go v2](https://docs.aws.amazon.com/goto/SdkForGoV2/iotwireless-2025-11-06/ListQueuedMessages) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/iotwireless-2025-11-06/ListQueuedMessages) 
+  [AWS SDK for JavaScript V3](https://docs.aws.amazon.com/goto/SdkForJavaScriptV3/iotwireless-2025-11-06/ListQueuedMessages) 
+  [AWS SDK for Kotlin](https://docs.aws.amazon.com/goto/SdkForKotlin/iotwireless-2025-11-06/ListQueuedMessages) 
+  [AWS SDK for PHP V3](https://docs.aws.amazon.com/goto/SdkForPHPV3/iotwireless-2025-11-06/ListQueuedMessages) 
+  [AWS SDK for Python](https://docs.aws.amazon.com/goto/boto3/iotwireless-2025-11-06/ListQueuedMessages) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/iotwireless-2025-11-06/ListQueuedMessages)