# ShardFilter
<a name="API_streams_ShardFilter"></a>

This optional field contains the filter definition for the `DescribeStream` API.

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

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

 ** ShardId **   <a name="DDB-Type-streams_ShardFilter-ShardId"></a>
Contains the `shardId` of the parent shard for which you are requesting child shards.  
 *Sample request:*   
Type: String  
Length Constraints: Minimum length of 28. Maximum length of 65.  
Required: No

 ** Type **   <a name="DDB-Type-streams_ShardFilter-Type"></a>
Contains the type of filter to be applied on the `DescribeStream` API. Currently, the only value this parameter accepts is `CHILD_SHARDS`.  
Type: String  
Valid Values: `CHILD_SHARDS`   
Required: No

## See Also
<a name="API_streams_ShardFilter_SeeAlso"></a>

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/streams-dynamodb-2012-08-10/ShardFilter) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/streams-dynamodb-2012-08-10/ShardFilter) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/streams-dynamodb-2012-08-10/ShardFilter)