# StructuredMessageFieldNameAndDataTypePair
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Represents a `StructureMessageName` to `DataType` map element.

## Contents
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 ** dataType **   <a name="iotfleetwise-Type-StructuredMessageFieldNameAndDataTypePair-dataType"></a>
The data type.   
Type: [StructuredMessage](API_StructuredMessage.md) object  
 **Note: **This object is a Union. Only one member of this object can be specified or returned.  
Required: Yes

 ** fieldName **   <a name="iotfleetwise-Type-StructuredMessageFieldNameAndDataTypePair-fieldName"></a>
The field name of the structured message. It determines how a data value is referenced in the target language.   
Type: String  
Length Constraints: Minimum length of 1. Maximum length of 150.  
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/iotfleetwise-2021-06-17/StructuredMessageFieldNameAndDataTypePair) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/iotfleetwise-2021-06-17/StructuredMessageFieldNameAndDataTypePair) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/iotfleetwise-2021-06-17/StructuredMessageFieldNameAndDataTypePair)