# TopicRuleListItem
<a name="API_TopicRuleListItem"></a>

Describes a rule.

## Contents
<a name="API_TopicRuleListItem_Contents"></a>

 ** createdAt **   <a name="iot-Type-TopicRuleListItem-createdAt"></a>
The date and time the rule was created.  
Type: Timestamp  
Required: No

 ** ruleArn **   <a name="iot-Type-TopicRuleListItem-ruleArn"></a>
The rule ARN.  
Type: String  
Required: No

 ** ruleDisabled **   <a name="iot-Type-TopicRuleListItem-ruleDisabled"></a>
Specifies whether the rule is disabled.  
Type: Boolean  
Required: No

 ** ruleName **   <a name="iot-Type-TopicRuleListItem-ruleName"></a>
The name of the rule.  
Type: String  
Length Constraints: Minimum length of 1. Maximum length of 128.  
Pattern: `^[a-zA-Z0-9_]+$`   
Required: No

 ** topicPattern **   <a name="iot-Type-TopicRuleListItem-topicPattern"></a>
The pattern for the topic names that apply.  
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-2015-05-28/TopicRuleListItem) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/iot-2015-05-28/TopicRuleListItem) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/iot-2015-05-28/TopicRuleListItem)