# PropertyDefinitionRequest
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An object that sets information about a property.

## Contents
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 ** configuration **   <a name="tm-Type-PropertyDefinitionRequest-configuration"></a>
A mapping that specifies configuration information about the property. Use this field to specify information that you read from and write to an external source.  
Type: String to string map  
Key Length Constraints: Minimum length of 1. Maximum length of 256.  
Key Pattern: `[a-zA-Z_\-0-9]+`   
Value Pattern: `.*`   
Required: No

 ** dataType **   <a name="tm-Type-PropertyDefinitionRequest-dataType"></a>
An object that contains information about the data type.  
Type: [DataType](API_DataType.md) object  
Required: No

 ** defaultValue **   <a name="tm-Type-PropertyDefinitionRequest-defaultValue"></a>
An object that contains the default value.  
Type: [DataValue](API_DataValue.md) object  
Required: No

 ** displayName **   <a name="tm-Type-PropertyDefinitionRequest-displayName"></a>
A friendly name for the property.  
Type: String  
Length Constraints: Minimum length of 0. Maximum length of 256.  
Pattern: `.*[^\u0000-\u001F\u007F]*.*`   
Required: No

 ** isExternalId **   <a name="tm-Type-PropertyDefinitionRequest-isExternalId"></a>
A Boolean value that specifies whether the property ID comes from an external data store.  
Type: Boolean  
Required: No

 ** isRequiredInEntity **   <a name="tm-Type-PropertyDefinitionRequest-isRequiredInEntity"></a>
A Boolean value that specifies whether the property is required.  
Type: Boolean  
Required: No

 ** isStoredExternally **   <a name="tm-Type-PropertyDefinitionRequest-isStoredExternally"></a>
A Boolean value that specifies whether the property is stored externally.  
Type: Boolean  
Required: No

 ** isTimeSeries **   <a name="tm-Type-PropertyDefinitionRequest-isTimeSeries"></a>
A Boolean value that specifies whether the property consists of time series data.  
Type: Boolean  
Required: No

## 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/iottwinmaker-2021-11-29/PropertyDefinitionRequest) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/iottwinmaker-2021-11-29/PropertyDefinitionRequest) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/iottwinmaker-2021-11-29/PropertyDefinitionRequest)