# CompositeModelProperty
<a name="API_CompositeModelProperty"></a>

Contains information about a composite model property on an asset.

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

 ** assetProperty **   <a name="iotsitewise-Type-CompositeModelProperty-assetProperty"></a>
Contains asset property information.  
Type: [Property](API_Property.md) object  
Required: Yes

 ** name **   <a name="iotsitewise-Type-CompositeModelProperty-name"></a>
The name of the property.  
Type: String  
Length Constraints: Minimum length of 1. Maximum length of 256.  
Pattern: `[^\u0000-\u001F\u007F]+`   
Required: Yes

 ** type **   <a name="iotsitewise-Type-CompositeModelProperty-type"></a>
The type of the composite model that defines this property.  
Type: String  
Length Constraints: Minimum length of 1. Maximum length of 256.  
Pattern: `[^\u0000-\u001F\u007F]+`   
Required: Yes

 ** externalId **   <a name="iotsitewise-Type-CompositeModelProperty-externalId"></a>
The external ID of the composite model that contains the property. For more information, see [Using external IDs](https://docs.amazonaws.cn/iot-sitewise/latest/userguide/object-ids.html#external-ids) in the * Amazon IoT SiteWise User Guide*.  
Type: String  
Length Constraints: Minimum length of 2. Maximum length of 128.  
Pattern: `[a-zA-Z0-9_][a-zA-Z_\-0-9.:]*[a-zA-Z0-9_]+`   
Required: No

 ** id **   <a name="iotsitewise-Type-CompositeModelProperty-id"></a>
 The ID of the composite model that contains the property.   
Type: String  
Length Constraints: Fixed length of 36.  
Pattern: `^(?!00000000-0000-0000-0000-000000000000)[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$`   
Required: No

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

For more information about using this API in one of the language-specific Amazon SDKs, see the following:
+  [Amazon SDK for C\$1\$1](https://docs.amazonaws.cn/goto/SdkForCpp/iotsitewise-2019-12-02/CompositeModelProperty) 
+  [Amazon SDK for Java V2](https://docs.amazonaws.cn/goto/SdkForJavaV2/iotsitewise-2019-12-02/CompositeModelProperty) 
+  [Amazon SDK for Ruby V3](https://docs.amazonaws.cn/goto/SdkForRubyV3/iotsitewise-2019-12-02/CompositeModelProperty)