# MqttTopicConfig
<a name="API_MqttTopicConfig"></a>

The MQTT topic to which the AWS IoT FleetWise campaign routes data. For more information, see [Device communication protocols](https://docs.aws.amazon.com/iot/latest/developerguide/protocols.html) in the * AWS IoT Core Developer Guide*.

**Important**  
 AWS IoT FleetWise is no longer open to new customers. Existing customers can continue to use the service as normal. For more information, see [AWS IoT FleetWise availability change](https://docs.aws.amazon.com/iot-fleetwise/latest/developerguide/iotfleetwise-availability-change.html).

## Contents
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 ** executionRoleArn **   <a name="iotfleetwise-Type-MqttTopicConfig-executionRoleArn"></a>
The ARN of the role that grants AWS IoT FleetWise permission to access and act on messages sent to the MQTT topic.  
Type: String  
Length Constraints: Minimum length of 20. Maximum length of 2048.  
Pattern: `arn:(aws[a-zA-Z0-9-]*):iam::(\d{12})?:(role((\u002F)|(\u002F[\u0021-\u007F]+\u002F))[\w+=,.@-]+)`   
Required: Yes

 ** mqttTopicArn **   <a name="iotfleetwise-Type-MqttTopicConfig-mqttTopicArn"></a>
The ARN of the MQTT topic.  
Type: String  
Length Constraints: Minimum length of 20. Maximum length of 2048.  
Pattern: `arn:.*`   
Required: Yes

## 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\+\+](https://docs.aws.amazon.com/goto/SdkForCpp/iotfleetwise-2021-06-17/MqttTopicConfig) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/iotfleetwise-2021-06-17/MqttTopicConfig) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/iotfleetwise-2021-06-17/MqttTopicConfig)