# ContentBlockerRule
<a name="API_ContentBlockerRule"></a>

A rule for configuring how Amazon Q Business responds when it encounters a a blocked topic. You can configure a custom message to inform your end users that they have asked about a restricted topic and suggest any next steps they should take.

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

 ** systemMessageOverride **   <a name="qbusiness-Type-ContentBlockerRule-systemMessageOverride"></a>
The configured custom message displayed to an end user informing them that they've used a blocked phrase during chat.  
Type: String  
Length Constraints: Minimum length of 0. Maximum length of 350.  
Pattern: `\P{C}*`   
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/qbusiness-2023-11-27/ContentBlockerRule) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/qbusiness-2023-11-27/ContentBlockerRule) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/qbusiness-2023-11-27/ContentBlockerRule)