# MemberIndex
<a name="API_MemberIndex"></a>

An index is the data store used by Amazon Resource Explorer to hold information about your Amazon resources that the service discovers. 

## Contents
<a name="API_MemberIndex_Contents"></a>

**Note**  
In the following list, the required parameters are described first.

 ** AccountId **   <a name="resourceexplorer-Type-MemberIndex-AccountId"></a>
The account ID for the index.  
Type: String  
Required: No

 ** Arn **   <a name="resourceexplorer-Type-MemberIndex-Arn"></a>
The [Amazon resource name (ARN)](https://docs.amazonaws.cn/general/latest/gr/aws-arns-and-namespaces.html) of the index.  
Type: String  
Required: No

 ** Region **   <a name="resourceexplorer-Type-MemberIndex-Region"></a>
The Amazon Web Services Region in which the index exists.  
Type: String  
Required: No

 ** Type **   <a name="resourceexplorer-Type-MemberIndex-Type"></a>
The type of index. It can be one of the following values:   
+  `LOCAL` – The index contains information about resources from only the same Amazon Web Services Region.
+  `AGGREGATOR` – Resource Explorer replicates copies of the indexed information about resources in all other Amazon Web Services Regions to the aggregator index. This lets search results in the Region with the aggregator index to include resources from all Regions in the account where Resource Explorer is turned on.
Type: String  
Valid Values: `LOCAL | AGGREGATOR`   
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\+\+](https://docs.amazonaws.cn/goto/SdkForCpp/resource-explorer-2-2022-07-28/MemberIndex) 
+  [Amazon SDK for Java V2](https://docs.amazonaws.cn/goto/SdkForJavaV2/resource-explorer-2-2022-07-28/MemberIndex) 
+  [Amazon SDK for Ruby V3](https://docs.amazonaws.cn/goto/SdkForRubyV3/resource-explorer-2-2022-07-28/MemberIndex)