# PreRollVastResponse
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The settings that control how MediaTailor processes VAST responses from the ad decision server for live pre-roll ad breaks.

## Contents
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 ** AdSequencingMode **   <a name="mediatailor-Type-PreRollVastResponse-AdSequencingMode"></a>
The ad sequencing mode for live pre-roll ads. `FOLLOW_AD_SEQUENCE` inserts sequenced ads in increasing order and uses standalone ads only as replacements when a sequenced ad fails. `IGNORE_AD_SEQUENCE` inserts ads in the order they appear in the VAST response, regardless of sequence attributes. The default behavior is `IGNORE_AD_SEQUENCE`.  
Type: String  
Valid Values: `FOLLOW_AD_SEQUENCE | IGNORE_AD_SEQUENCE`   
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\+\+](https://docs.aws.amazon.com/goto/SdkForCpp/mediatailor-2018-04-23/PreRollVastResponse) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/mediatailor-2018-04-23/PreRollVastResponse) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/mediatailor-2018-04-23/PreRollVastResponse)