# Rationale


Contains the reasoning, based on the input, that the agent uses to justify carrying out an action group or getting information from a knowledge base.

## Contents


 ** text **   <a name="bedrock-Type-agent-runtime_Rationale-text"></a>
The reasoning or thought process of the agent, based on the input.  
Type: String  
Required: No

 ** traceId **   <a name="bedrock-Type-agent-runtime_Rationale-traceId"></a>
The unique identifier of the trace step.  
Type: String  
Length Constraints: Minimum length of 2. Maximum length of 16.  
Required: No

## See Also


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/bedrock-agent-runtime-2023-07-26/Rationale) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/bedrock-agent-runtime-2023-07-26/Rationale) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/bedrock-agent-runtime-2023-07-26/Rationale)