# MetricAttribution
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Contains information about a metric attribution associated with an event. For more information about metric attributions, see [Measuring impact of recommendations](https://docs.aws.amazon.com/personalize/latest/dg/measuring-recommendation-impact.html).

## Contents
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 ** eventAttributionSource **   <a name="personalize-Type-UBS_MetricAttribution-eventAttributionSource"></a>
The source of the event, such as a third party.  
Type: String  
Length Constraints: Maximum length of 1024.  
Pattern: `^[\x20-\x7E]*[\x21-\x7E]+[\x20-\x7E]*$`   
Required: Yes

## 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/personalize-events-2018-03-22/MetricAttribution) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/personalize-events-2018-03-22/MetricAttribution) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/personalize-events-2018-03-22/MetricAttribution)