# TriggerCondition
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Defines how a Trigger fires.

## Contents
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**Important**  
This data type is a UNION, so only one of the following members can be specified when used or returned.

 ** schedule **   <a name="devopsagent-Type-TriggerCondition-schedule"></a>
Schedule-based firing condition. On CreateTrigger supply exactly one of the schedule condition's expression or spec.  
Type: [ScheduleCondition](API_ScheduleCondition.md) object  
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/devops-agent-2026-01-01/TriggerCondition) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/devops-agent-2026-01-01/TriggerCondition) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/devops-agent-2026-01-01/TriggerCondition)