# TestSourceSummary
<a name="API_TestSourceSummary"></a>

A configured monitoring source returned by ListTestSources. Exactly one member is set.

## 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.

 ** observabilityAlarm **   <a name="ngresiliencehub-Type-TestSourceSummary-observabilityAlarm"></a>
A configured observability alarm.  
Type: [ObservabilityAlarmSummary](API_ObservabilityAlarmSummary.md) object  
Required: No

 ** successCriteriaAlarm **   <a name="ngresiliencehub-Type-TestSourceSummary-successCriteriaAlarm"></a>
A configured success criteria alarm.  
Type: [SuccessCriteriaAlarmSummary](API_SuccessCriteriaAlarmSummary.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/resiliencehubv2-2026-02-17/TestSourceSummary) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/resiliencehubv2-2026-02-17/TestSourceSummary) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/resiliencehubv2-2026-02-17/TestSourceSummary)