# RetrievedTrace
<a name="API_RetrievedTrace"></a>

 Retrieved collection of spans with matching trace IDs. 

## Contents
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 ** Duration **   <a name="xray-Type-RetrievedTrace-Duration"></a>
 The length of time in seconds between the start time of the root span and the end time of the last span that completed.   
Type: Double  
Required: No

 ** Id **   <a name="xray-Type-RetrievedTrace-Id"></a>
 The unique identifier for the span.   
Type: String  
Length Constraints: Minimum length of 1. Maximum length of 35.  
Required: No

 ** Spans **   <a name="xray-Type-RetrievedTrace-Spans"></a>
 Spans that comprise the trace.   
Type: Array of [Span](API_Span.md) objects  
Array Members: Minimum number of 0 items. Maximum number of 100 items.  
Required: No

## See Also
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For more information about using this API in one of the language-specific Amazon SDKs, see the following:
+  [Amazon SDK for C\$1\$1](https://docs.amazonaws.cn/goto/SdkForCpp/xray-2016-04-12/RetrievedTrace) 
+  [Amazon SDK for Java V2](https://docs.amazonaws.cn/goto/SdkForJavaV2/xray-2016-04-12/RetrievedTrace) 
+  [Amazon SDK for Ruby V3](https://docs.amazonaws.cn/goto/SdkForRubyV3/xray-2016-04-12/RetrievedTrace)