# RetainedMessageSummary
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Information about a single retained message.

## Contents
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 ** lastModifiedTime **   <a name="iot-Type-iotdata_RetainedMessageSummary-lastModifiedTime"></a>
The Epoch date and time, in milliseconds, when the retained message was stored by AWS IoT.  
Type: Long  
Required: No

 ** payloadSize **   <a name="iot-Type-iotdata_RetainedMessageSummary-payloadSize"></a>
The size of the retained message's payload in bytes.  
Type: Long  
Required: No

 ** qos **   <a name="iot-Type-iotdata_RetainedMessageSummary-qos"></a>
The quality of service (QoS) level used to publish the retained message.  
Type: Integer  
Valid Range: Minimum value of 0. Maximum value of 1.  
Required: No

 ** topic **   <a name="iot-Type-iotdata_RetainedMessageSummary-topic"></a>
The topic name to which the retained message was published.  
Type: String  
Required: No

## See Also
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For more information about using this API in one of the language-specific AWS SDKs, see the following:
+  [AWS SDK for C\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/iot-data-2015-05-28/RetainedMessageSummary) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/iot-data-2015-05-28/RetainedMessageSummary) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/iot-data-2015-05-28/RetainedMessageSummary)