# RetrievalInstructionVersionSummary
<a name="API_agent_RetrievalInstructionVersionSummary"></a>

A summary of one numbered version of a retrieval instruction, without the content.

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

 ** createdAt **   <a name="bedrock-Type-agent_RetrievalInstructionVersionSummary-createdAt"></a>
When this version was created.  
Type: Timestamp  
Required: Yes

 ** version **   <a name="bedrock-Type-agent_RetrievalInstructionVersionSummary-version"></a>
The version number.  
Type: String  
Pattern: `[1-9][0-9]{0,8}`   
Required: Yes

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

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/bedrock-agent-2023-06-05/RetrievalInstructionVersionSummary) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/bedrock-agent-2023-06-05/RetrievalInstructionVersionSummary) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/bedrock-agent-2023-06-05/RetrievalInstructionVersionSummary)